diff --git a/pkg/registry/ecr_cred_injector.go b/pkg/registry/ecr_cred_injector.go
index b20497f4..741fdd6f 100644
--- a/pkg/registry/ecr_cred_injector.go
+++ b/pkg/registry/ecr_cred_injector.go
@@ -87,6 +87,7 @@ func (a *ECRCredInjector) Refresh(ctx context.Context) error {
 
 	if !IsECRRegistry(registry) {
 		a.log.Info("defaultRegistry is not ECR registry, skip injecting credential to docker config")
+		return nil
 	}
 	// update "config.json" in dockerSecret
 	return a.InjectCredential(ctx, *dockerSecret, registry, cred)