diff --git a/pkg/endpoints/filters/authentication.go b/pkg/endpoints/filters/authentication.go
index e88e7ad28..43dcfa952 100644
--- a/pkg/endpoints/filters/authentication.go
+++ b/pkg/endpoints/filters/authentication.go
@@ -37,7 +37,7 @@ import (
 // is invoked to serve the request.
 func WithAuthentication(handler http.Handler, auth authenticator.Request, failed http.Handler, apiAuds authenticator.Audiences) http.Handler {
 	if auth == nil {
-		klog.Warningf("Authentication is disabled")
+		klog.Warning("Authentication is disabled")
 		return handler
 	}
 	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
diff --git a/pkg/endpoints/filters/authorization.go b/pkg/endpoints/filters/authorization.go
index 8d115ff09..5f0ce730b 100644
--- a/pkg/endpoints/filters/authorization.go
+++ b/pkg/endpoints/filters/authorization.go
@@ -44,7 +44,7 @@ const (
 // WithAuthorizationCheck passes all authorized requests on to handler, and returns a forbidden error otherwise.
 func WithAuthorization(handler http.Handler, a authorizer.Authorizer, s runtime.NegotiatedSerializer) http.Handler {
 	if a == nil {
-		klog.Warningf("Authorization is disabled")
+		klog.Warning("Authorization is disabled")
 		return handler
 	}
 	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
diff --git a/pkg/server/options/authentication.go b/pkg/server/options/authentication.go
index 75e9c8dff..46130aad4 100644
--- a/pkg/server/options/authentication.go
+++ b/pkg/server/options/authentication.go
@@ -334,8 +334,8 @@ func (s *DelegatingAuthenticationOptions) ApplyTo(authenticationInfo *server.Aut
 			if err != nil {
 				if s.TolerateInClusterLookupFailure {
 					klog.Warningf("Error looking up in-cluster authentication configuration: %v", err)
-					klog.Warningf("Continuing without authentication configuration. This may treat all requests as anonymous.")
-					klog.Warningf("To require authentication configuration lookup to succeed, set --authentication-tolerate-lookup-failure=false")
+					klog.Warning("Continuing without authentication configuration. This may treat all requests as anonymous.")
+					klog.Warning("To require authentication configuration lookup to succeed, set --authentication-tolerate-lookup-failure=false")
 				} else {
 					return fmt.Errorf("unable to load configmap based request-header-client-ca-file: %v", err)
 				}
diff --git a/pkg/server/options/authorization.go b/pkg/server/options/authorization.go
index 6b4129639..bfa02bc3f 100644
--- a/pkg/server/options/authorization.go
+++ b/pkg/server/options/authorization.go
@@ -173,7 +173,7 @@ func (s *DelegatingAuthorizationOptions) toAuthorizer(client kubernetes.Interfac
 	}
 
 	if client == nil {
-		klog.Warningf("No authorization-kubeconfig provided, so SubjectAccessReview of authorization tokens won't work.")
+		klog.Warning("No authorization-kubeconfig provided, so SubjectAccessReview of authorization tokens won't work.")
 	} else {
 		cfg := authorizerfactory.DelegatingAuthorizerConfig{
 			SubjectAccessReviewClient: client.AuthorizationV1().SubjectAccessReviews(),