diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/cmd/server/start.go b/staging/src/k8s.io/apiextensions-apiserver/pkg/cmd/server/start.go
index c36071d8da..4ef57bd228 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/cmd/server/start.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/cmd/server/start.go
@@ -51,9 +51,6 @@ func NewCustomResourceDefinitionsServerOptions(out, errOut io.Writer) *CustomRes
 		StdErr: errOut,
 	}
 
-	// the shared informer is not needed for apiextentions apiserver. Disable the kubeconfig flag and the client creation.
-	o.RecommendedOptions.CoreAPI = nil
-
 	return o
 }
 
diff --git a/staging/src/k8s.io/apiextensions-apiserver/test/integration/testserver/start.go b/staging/src/k8s.io/apiextensions-apiserver/test/integration/testserver/start.go
index 22b9fa2862..406d4e972e 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/test/integration/testserver/start.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/test/integration/testserver/start.go
@@ -47,6 +47,7 @@ func DefaultServerConfig() (*extensionsapiserver.Config, error) {
 	options.RecommendedOptions.Authentication = nil // disable
 	options.RecommendedOptions.Authorization = nil  // disable
 	options.RecommendedOptions.Admission = nil      // disable
+	options.RecommendedOptions.CoreAPI = nil        // disable
 	options.RecommendedOptions.SecureServing.BindAddress = net.ParseIP("127.0.0.1")
 	options.RecommendedOptions.SecureServing.Listener = listener
 	etcdURL, ok := os.LookupEnv("KUBE_INTEGRATION_ETCD_URL")