diff --git a/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/aggregator/aggregator.go b/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/aggregator/aggregator.go
index 52d9d35afd4..8d34368b251 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/aggregator/aggregator.go
+++ b/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/aggregator/aggregator.go
@@ -228,7 +228,7 @@ func (s *specAggregator) AddUpdateAPIService(apiService *v1.APIService, handler
 		s.openAPIVersionedService.UpdateSpecLazy(s.buildMergeSpecLocked())
 	}
 
-	return s.updateServiceLocked(apiService.Name)
+	return nil
 }
 
 // RemoveAPIService removes an api service from OpenAPI aggregation. If it does not exist, no error is returned.
diff --git a/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/controller.go b/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/controller.go
index 5f107150c8e..69f32f4aa86 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/controller.go
+++ b/staging/src/k8s.io/kube-aggregator/pkg/controllers/openapi/controller.go
@@ -139,7 +139,10 @@ func (c *AggregationController) AddAPIService(handler http.Handler, apiService *
 
 // UpdateAPIService updates API Service's info and handler.
 func (c *AggregationController) UpdateAPIService(handler http.Handler, apiService *v1.APIService) {
-	if err := c.openAPIAggregationManager.AddUpdateAPIService(apiService, handler); err != nil {
+	if apiService.Spec.Service == nil {
+		return
+	}
+	if err := c.openAPIAggregationManager.UpdateAPIServiceSpec(apiService.Name); err != nil {
 		utilruntime.HandleError(fmt.Errorf("Error updating APIService %q with err: %v", apiService.Name, err))
 	}
 	key := apiService.Name