diff --git a/package-lock.json b/package-lock.json
index 81b763ed..cdf4f844 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,16 +1,16 @@
 {
     "name": "css-what",
-    "version": "6.0.0",
+    "version": "6.0.1",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "css-what",
-            "version": "6.0.0",
+            "version": "6.0.1",
             "license": "BSD-2-Clause",
             "devDependencies": {
                 "@types/jest": "^27.0.3",
-                "@types/node": "^17.0.4",
+                "@types/node": "^17.0.5",
                 "@typescript-eslint/eslint-plugin": "^5.8.0",
                 "@typescript-eslint/parser": "^5.8.0",
                 "eslint": "^8.5.0",
@@ -1139,9 +1139,9 @@
             "dev": true
         },
         "node_modules/@types/node": {
-            "version": "17.0.4",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.4.tgz",
-            "integrity": "sha512-6xwbrW4JJiJLgF+zNypN5wr2ykM9/jHcL7rQ8fZe2vuftggjzZeRSM4OwRc6Xk8qWjwJ99qVHo/JgOGmomWRog==",
+            "version": "17.0.5",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.5.tgz",
+            "integrity": "sha512-w3mrvNXLeDYV1GKTZorGJQivK6XLCoGwpnyJFbJVK/aTBQUxOCaa/GlFAAN3OTDFcb7h5tiFG+YXCO2By+riZw==",
             "dev": true
         },
         "node_modules/@types/prettier": {
@@ -6343,9 +6343,9 @@
             "dev": true
         },
         "@types/node": {
-            "version": "17.0.4",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.4.tgz",
-            "integrity": "sha512-6xwbrW4JJiJLgF+zNypN5wr2ykM9/jHcL7rQ8fZe2vuftggjzZeRSM4OwRc6Xk8qWjwJ99qVHo/JgOGmomWRog==",
+            "version": "17.0.5",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.5.tgz",
+            "integrity": "sha512-w3mrvNXLeDYV1GKTZorGJQivK6XLCoGwpnyJFbJVK/aTBQUxOCaa/GlFAAN3OTDFcb7h5tiFG+YXCO2By+riZw==",
             "dev": true
         },
         "@types/prettier": {
diff --git a/package.json b/package.json
index 14c01469..b0fb2bec 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "author": "Felix Böhm <me@feedic.com> (http://feedic.com)",
     "name": "css-what",
     "description": "a CSS selector parser",
-    "version": "6.0.0",
+    "version": "6.0.1",
     "funding": {
         "url": "https://github.com/sponsors/fb55"
     },
@@ -32,7 +32,7 @@
     },
     "devDependencies": {
         "@types/jest": "^27.0.3",
-        "@types/node": "^17.0.4",
+        "@types/node": "^17.0.5",
         "@typescript-eslint/eslint-plugin": "^5.8.0",
         "@typescript-eslint/parser": "^5.8.0",
         "eslint": "^8.5.0",
diff --git a/src/__fixtures__/tests.ts b/src/__fixtures__/tests.ts
index 388fdc5e..ec788647 100644
--- a/src/__fixtures__/tests.ts
+++ b/src/__fixtures__/tests.ts
@@ -972,4 +972,25 @@ export const tests: [
         ],
         "column combinator",
     ],
+    [
+        "foo||bar",
+        [
+            [
+                {
+                    name: "foo",
+                    namespace: null,
+                    type: SelectorType.Tag,
+                },
+                {
+                    type: SelectorType.ColumnCombinator,
+                },
+                {
+                    name: "bar",
+                    namespace: null,
+                    type: SelectorType.Tag,
+                },
+            ],
+        ],
+        "column combinator without whitespace",
+    ],
 ];
diff --git a/src/parse.ts b/src/parse.ts
index 03534374..6161152b 100644
--- a/src/parse.ts
+++ b/src/parse.ts
@@ -564,7 +564,10 @@ function parseSelector(
                     break loop;
                 }
 
-                if (selector.charCodeAt(selectorIndex) === CharCode.Pipe) {
+                if (
+                    selector.charCodeAt(selectorIndex) === CharCode.Pipe &&
+                    selector.charCodeAt(selectorIndex + 1) !== CharCode.Pipe
+                ) {
                     namespace = name;
                     if (
                         selector.charCodeAt(selectorIndex + 1) ===