diff --git a/hack/.staticcheck_failures b/hack/.staticcheck_failures
index 5f76640d961..832dc1690ad 100644
--- a/hack/.staticcheck_failures
+++ b/hack/.staticcheck_failures
@@ -1,5 +1,4 @@
 cluster/images/etcd/migrate
-pkg/controller/garbagecollector
 pkg/controller/podautoscaler
 pkg/controller/replicaset
 pkg/controller/resourcequota
diff --git a/pkg/controller/garbagecollector/garbagecollector_test.go b/pkg/controller/garbagecollector/garbagecollector_test.go
index d07402021e5..d707c990707 100644
--- a/pkg/controller/garbagecollector/garbagecollector_test.go
+++ b/pkg/controller/garbagecollector/garbagecollector_test.go
@@ -906,7 +906,7 @@ func expectSyncNotBlocked(fakeDiscoveryClient *fakeServerResources, workerLock *
 	workerLockAcquired := make(chan struct{})
 	go func() {
 		workerLock.Lock()
-		workerLock.Unlock()
+		defer workerLock.Unlock()
 		close(workerLockAcquired)
 	}()
 	select {