diff --git a/cmd/kube-controller-manager/app/core.go b/cmd/kube-controller-manager/app/core.go
index deea691137..7f39d085ec 100644
--- a/cmd/kube-controller-manager/app/core.go
+++ b/cmd/kube-controller-manager/app/core.go
@@ -214,7 +214,7 @@ func startPersistentVolumeBinderController(ctx ControllerContext) (http.Handler,
 
 func startAttachDetachController(ctx ControllerContext) (http.Handler, bool, error) {
 	if ctx.ComponentConfig.AttachDetachController.ReconcilerSyncLoopPeriod.Duration < time.Second {
-		return nil, true, fmt.Errorf("Duration time must be greater than one second as set via command line option reconcile-sync-loop-period")
+		return nil, true, fmt.Errorf("duration time must be greater than one second as set via command line option reconcile-sync-loop-period")
 	}
 	csiClientConfig := ctx.ClientBuilder.ConfigOrDie("attachdetach-controller")
 	// csiClient works with CRDs that support json only
@@ -252,7 +252,7 @@ func startVolumeExpandController(ctx ControllerContext) (http.Handler, bool, err
 			ProbeExpandableVolumePlugins(ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration))
 
 		if expandControllerErr != nil {
-			return nil, true, fmt.Errorf("Failed to start volume expand controller : %v", expandControllerErr)
+			return nil, true, fmt.Errorf("failed to start volume expand controller : %v", expandControllerErr)
 		}
 		go expandController.Run(ctx.Stop)
 		return nil, true, nil
@@ -408,7 +408,7 @@ func startGarbageCollectorController(ctx ControllerContext) (http.Handler, bool,
 		ctx.InformersStarted,
 	)
 	if err != nil {
-		return nil, true, fmt.Errorf("Failed to start the generic garbage collector: %v", err)
+		return nil, true, fmt.Errorf("failed to start the generic garbage collector: %v", err)
 	}
 
 	// Start the garbage collector.
diff --git a/cmd/kube-controller-manager/app/plugins.go b/cmd/kube-controller-manager/app/plugins.go
index e56752b22a..bf82df07e5 100644
--- a/cmd/kube-controller-manager/app/plugins.go
+++ b/cmd/kube-controller-manager/app/plugins.go
@@ -178,7 +178,7 @@ func AttemptToLoadRecycler(path string, config *volume.VolumeConfig) error {
 			return err
 		}
 		if err = volume.ValidateRecyclerPodTemplate(recyclerPod); err != nil {
-			return fmt.Errorf("Pod specification (%v): %v", path, err)
+			return fmt.Errorf("pod specification (%v): %v", path, err)
 		}
 		config.RecyclerPodTemplate = recyclerPod
 	}