diff --git a/src/completers.ps1 b/src/completers.ps1
index 901d1de8e..9cc61195a 100644
--- a/src/completers.ps1
+++ b/src/completers.ps1
@@ -7,7 +7,11 @@
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubAppInstallation @params | Where-Object { $_.Type -eq 'User' -and $_.Target.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubAppInstallation @params | Where-Object { $_.Type -eq 'User' -and $_.Target.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Target.Name, $_.Target.Name, 'ParameterValue', $_.Target.Name)
     }
 }
@@ -20,7 +24,11 @@ Register-ArgumentCompleter -CommandName Connect-GitHubApp -ParameterName Organiz
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubAppInstallation @params | Where-Object { $_.Type -eq 'Organization' -and $_.Target.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubAppInstallation @params | Where-Object { $_.Type -eq 'Organization' -and $_.Target.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Target.Name, $_.Target.Name, 'ParameterValue', $_.Target.Name)
     }
 }
@@ -33,7 +41,11 @@ Register-ArgumentCompleter -CommandName Connect-GitHubApp -ParameterName Enterpr
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubAppInstallation @params | Where-Object { $_.Type -eq 'Enterprise' -and $_.Target.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubAppInstallation @params | Where-Object { $_.Type -eq 'Enterprise' -and $_.Target.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Target.Name, $_.Target.Name, 'ParameterValue', $_.Target.Name)
     }
 }
diff --git a/src/functions/public/Auth/Context/completers.ps1 b/src/functions/public/Auth/Context/completers.ps1
index 9f4c2752d..c2eb1dee3 100644
--- a/src/functions/public/Auth/Context/completers.ps1
+++ b/src/functions/public/Auth/Context/completers.ps1
@@ -14,7 +14,11 @@
 
     $contexts += Get-GitHubContext -ListAvailable -Verbose:$false -Debug:$false
     $contexts = $contexts | Sort-Object -Property Name
-    $contexts | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = $contexts | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
diff --git a/src/functions/public/Config/completers.ps1 b/src/functions/public/Config/completers.ps1
index c498f0497..6127bf086 100644
--- a/src/functions/public/Config/completers.ps1
+++ b/src/functions/public/Config/completers.ps1
@@ -2,7 +2,11 @@
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    ([GitHubConfig]).GetProperties().Name | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = ([GitHubConfig]).GetProperties().Name | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_ )
     }
 }
@@ -13,17 +17,29 @@ Register-ArgumentCompleter -CommandName Set-GitHubConfig -ParameterName Value -S
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
     switch ($fakeBoundParameters.Name) {
         'CompletionMode' {
-            @('StartsWith', 'Contains') | Where-Object { $_ -like $pattern } | ForEach-Object {
+            $filteredOptions = @('StartsWith', 'Contains') | Where-Object { $_ -like $pattern }
+            if (-not $filteredOptions) {
+                return $null
+            }
+            $filteredOptions | ForEach-Object {
                 [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
             }
         }
         'HttpVersion' {
-            @('1.0', '1.1', '2.0', '3.0') | Where-Object { $_ -like $pattern } | ForEach-Object {
+            $filteredOptions = @('1.0', '1.1', '2.0', '3.0') | Where-Object { $_ -like $pattern }
+            if (-not $filteredOptions) {
+                return $null
+            }
+            $filteredOptions | ForEach-Object {
                 [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
             }
         }
         'EnvironmentType' {
-            @('Local', 'GitHubActions', 'FunctionApp', 'Unknown') | Where-Object { $_ -like $pattern } | ForEach-Object {
+            $filteredOptions = @('Local', 'GitHubActions', 'FunctionApp', 'Unknown') | Where-Object { $_ -like $pattern }
+            if (-not $filteredOptions) {
+                return $null
+            }
+            $filteredOptions | ForEach-Object {
                 [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
             }
         }
@@ -33,12 +49,20 @@ Register-ArgumentCompleter -CommandName Set-GitHubConfig -ParameterName Value -S
                 Debug   = $false
                 Verbose = $false
             }
-            Get-GitHubApiVersion @params | Where-Object { $_ -like $pattern } | ForEach-Object {
+            $filteredOptions = Get-GitHubApiVersion @params | Where-Object { $_ -like $pattern }
+            if (-not $filteredOptions) {
+                return $null
+            }
+            $filteredOptions | ForEach-Object {
                 [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
             }
         }
         'DefaultContext' {
-            Get-GitHubContext -ListAvailable | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+            $filteredOptions = Get-GitHubContext -ListAvailable | Where-Object { $_.Name -like $pattern }
+            if (-not $filteredOptions) {
+                return $null
+            }
+            $filteredOptions | ForEach-Object {
                 [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
             }
         }
diff --git a/src/functions/public/Environments/completers.ps1 b/src/functions/public/Environments/completers.ps1
index e2f9422f4..4e121eacb 100644
--- a/src/functions/public/Environments/completers.ps1
+++ b/src/functions/public/Environments/completers.ps1
@@ -11,7 +11,11 @@
         Debug      = $false
     }
     $params | Remove-HashtableEntry -NullOrEmptyValues
-    Get-GitHubEnvironment @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubEnvironment @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
@@ -28,7 +32,11 @@ Register-ArgumentCompleter -CommandName ($script:PSModuleInfo.FunctionsToExport)
         Debug      = $false
     }
     $params | Remove-HashtableEntry -NullOrEmptyValues
-    Get-GitHubEnvironment @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubEnvironment @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
diff --git a/src/functions/public/Gitignore/completers.ps1 b/src/functions/public/Gitignore/completers.ps1
index 86d7df84e..e6a60acdd 100644
--- a/src/functions/public/Gitignore/completers.ps1
+++ b/src/functions/public/Gitignore/completers.ps1
@@ -7,7 +7,11 @@
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubGitignore @params | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubGitignore @params | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
diff --git a/src/functions/public/License/completers.ps1 b/src/functions/public/License/completers.ps1
index a4c5a4f10..677059f67 100644
--- a/src/functions/public/License/completers.ps1
+++ b/src/functions/public/License/completers.ps1
@@ -7,7 +7,11 @@
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubLicense @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubLicense @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
diff --git a/src/functions/public/Organization/completers.ps1 b/src/functions/public/Organization/completers.ps1
index 2994f0240..59cf3b2c1 100644
--- a/src/functions/public/Organization/completers.ps1
+++ b/src/functions/public/Organization/completers.ps1
@@ -8,7 +8,11 @@
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubOrganization @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubOrganization @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
@@ -22,7 +26,11 @@ Register-ArgumentCompleter -CommandName ($script:PSModuleInfo.FunctionsToExport)
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubOrganization @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubOrganization @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
@@ -36,7 +44,11 @@ Register-ArgumentCompleter -CommandName ($script:PSModuleInfo.FunctionsToExport)
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubOrganization @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubOrganization @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
diff --git a/src/functions/public/Permission/completers.ps1 b/src/functions/public/Permission/completers.ps1
index dc0be7453..d49392053 100644
--- a/src/functions/public/Permission/completers.ps1
+++ b/src/functions/public/Permission/completers.ps1
@@ -2,7 +2,11 @@
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    [GitHubPermissionDefinition]::List.Name | Sort-Object -Unique | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = [GitHubPermissionDefinition]::List.Name | Sort-Object -Unique | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
@@ -11,7 +15,11 @@ Register-ArgumentCompleter -CommandName Get-GitHubPermissionDefinition -Paramete
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    [GitHubPermissionDefinition]::List.DisplayName | Sort-Object -Unique | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = [GitHubPermissionDefinition]::List.DisplayName | Sort-Object -Unique | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
@@ -20,7 +28,11 @@ Register-ArgumentCompleter -CommandName Get-GitHubPermissionDefinition -Paramete
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    [GitHubPermissionDefinition]::List.Type | Sort-Object -Unique | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = [GitHubPermissionDefinition]::List.Type | Sort-Object -Unique | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
@@ -29,7 +41,11 @@ Register-ArgumentCompleter -CommandName Get-GitHubPermissionDefinition -Paramete
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    [GitHubPermissionDefinition]::List.Scope | Sort-Object -Unique | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = [GitHubPermissionDefinition]::List.Scope | Sort-Object -Unique | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
diff --git a/src/functions/public/Repositories/Permissions/completers.ps1 b/src/functions/public/Repositories/Permissions/completers.ps1
index cdb1e0c2e..e266724bf 100644
--- a/src/functions/public/Repositories/Permissions/completers.ps1
+++ b/src/functions/public/Repositories/Permissions/completers.ps1
@@ -2,7 +2,11 @@
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    @('None', 'Pull', 'Triage', 'Push', 'Maintain', 'Admin', 'Read', 'Write') | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = @('None', 'Pull', 'Triage', 'Push', 'Maintain', 'Admin', 'Read', 'Write') | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
diff --git a/src/functions/public/Repositories/completers.ps1 b/src/functions/public/Repositories/completers.ps1
index 43ac6a7c7..124d98ae2 100644
--- a/src/functions/public/Repositories/completers.ps1
+++ b/src/functions/public/Repositories/completers.ps1
@@ -7,7 +7,11 @@
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubGitignore @params | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubGitignore @params | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
@@ -21,7 +25,11 @@ Register-ArgumentCompleter -CommandName New-GitHubRepository -ParameterName Lice
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubLicense @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubLicense @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
@@ -30,7 +38,11 @@ Register-ArgumentCompleter -CommandName Get-GitHubRepository -ParameterName Addi
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    [GitHubRepository].GetProperties().Name | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = [GitHubRepository].GetProperties().Name | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
@@ -39,7 +51,11 @@ Register-ArgumentCompleter -CommandName Get-GitHubRepository -ParameterName Prop
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters)
     $null = $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters
     $pattern = switch (Get-GitHubConfig -Name CompletionMode) { 'Contains' { "*$wordToComplete*" } default { "$wordToComplete*" } }
-    [GitHubRepository].GetProperties().Name | Where-Object { $_ -like $pattern } | ForEach-Object {
+    $filteredOptions = [GitHubRepository].GetProperties().Name | Where-Object { $_ -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
     }
 }
@@ -54,7 +70,11 @@ Register-ArgumentCompleter -CommandName ($script:PSModuleInfo.FunctionsToExport)
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubRepository @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubRepository @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
@@ -70,7 +90,11 @@ Register-ArgumentCompleter -CommandName ($script:PSModuleInfo.FunctionsToExport
         Verbose = $false
         Debug   = $false
     }
-    Get-GitHubRepository @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubRepository @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
diff --git a/src/functions/public/Secrets/completers.ps1 b/src/functions/public/Secrets/completers.ps1
index 411ed8ace..ec923b24e 100644
--- a/src/functions/public/Secrets/completers.ps1
+++ b/src/functions/public/Secrets/completers.ps1
@@ -12,7 +12,11 @@
         Debug       = $false
     }
     $params | Remove-HashtableEntry -NullOrEmptyValues
-    Get-GitHubSecret @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubSecret @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
diff --git a/src/functions/public/Teams/completers.ps1 b/src/functions/public/Teams/completers.ps1
index 64d643909..d0c65e2a8 100644
--- a/src/functions/public/Teams/completers.ps1
+++ b/src/functions/public/Teams/completers.ps1
@@ -9,7 +9,11 @@
         Verbose      = $false
         Debug        = $false
     }
-    Get-GitHubTeam @params | Where-Object { $_.Slug -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubTeam @params | Where-Object { $_.Slug -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Slug, $_.Slug, 'ParameterValue', $_.Slug)
     }
 }
@@ -24,7 +28,11 @@ Register-ArgumentCompleter -CommandName ($script:PSModuleInfo.FunctionsToExport)
         Verbose      = $false
         Debug        = $false
     }
-    Get-GitHubTeam @params | Where-Object { $_.Slug -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubTeam @params | Where-Object { $_.Slug -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Slug, $_.Slug, 'ParameterValue', $_.Slug)
     }
 }
diff --git a/src/functions/public/Variables/completers.ps1 b/src/functions/public/Variables/completers.ps1
index c897efa47..856e09ef4 100644
--- a/src/functions/public/Variables/completers.ps1
+++ b/src/functions/public/Variables/completers.ps1
@@ -12,7 +12,11 @@
         Debug       = $false
     }
     $params | Remove-HashtableEntry -NullOrEmptyValues
-    Get-GitHubVariable @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubVariable @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
diff --git a/src/functions/public/Workflows/completers.ps1 b/src/functions/public/Workflows/completers.ps1
index 29a8fb0e4..ca7c10323 100644
--- a/src/functions/public/Workflows/completers.ps1
+++ b/src/functions/public/Workflows/completers.ps1
@@ -11,7 +11,11 @@
         Debug      = $false
     }
     $params | Remove-HashtableEntry -NullOrEmptyValues
-    Get-GitHubWorkflow @params | Where-Object { $_.Name -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubWorkflow @params | Where-Object { $_.Name -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.Name, $_.Name, 'ParameterValue', $_.Name)
     }
 }
@@ -28,7 +32,11 @@ Register-ArgumentCompleter -CommandName ($script:PSModuleInfo.FunctionsToExport
         Debug      = $false
     }
     $params | Remove-HashtableEntry -NullOrEmptyValues
-    Get-GitHubWorkflow @params | Where-Object { $_.ID -like $pattern } | ForEach-Object {
+    $filteredOptions = Get-GitHubWorkflow @params | Where-Object { $_.ID -like $pattern }
+    if (-not $filteredOptions) {
+        return $null
+    }
+    $filteredOptions | ForEach-Object {
         [System.Management.Automation.CompletionResult]::new($_.ID, "$($_.Name) ($($_.ID))", 'ParameterValue', "$($_.Name) ($($_.ID))"  )
     }
 }