diff --git a/agent/agent_test.go b/agent/agent_test.go
index ca30bf3b98280..596471b49f603 100644
--- a/agent/agent_test.go
+++ b/agent/agent_test.go
@@ -35,7 +35,6 @@ import (
 	"github.com/spf13/afero"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"github.com/valyala/fasthttp/fasthttputil"
 	"go.uber.org/goleak"
 	"go.uber.org/mock/gomock"
 	"golang.org/x/crypto/ssh"
@@ -2028,8 +2027,9 @@ func setupAgent(t *testing.T, metadata agentsdk.Manifest, ptyTimeout time.Durati
 	agent.Agent,
 ) {
 	logger := slogtest.Make(t, &slogtest.Options{
-		// we get this error when closing the Agent API
-		IgnoredErrorIs: append(slogtest.DefaultIgnoredErrorIs, fasthttputil.ErrInmemoryListenerClosed),
+		// Agent can drop errors when shutting down, and some, like the
+		// fasthttplistener connection closed error, are unexported.
+		IgnoreErrors: true,
 	}).Leveled(slog.LevelDebug)
 	if metadata.DERPMap == nil {
 		metadata.DERPMap, _ = tailnettest.RunDERPAndSTUN(t)