diff --git a/pkg/controller/router.go b/pkg/controller/router.go
index 9c8cd3986..9006065da 100644
--- a/pkg/controller/router.go
+++ b/pkg/controller/router.go
@@ -221,7 +221,7 @@ func (c *CanaryRouter) createVirtualService(cd *flaggerv1.Canary) error {
 			return fmt.Errorf("VirtualService %s.%s create error %v", targetName, cd.Namespace, err)
 		}
 		c.logger.With("canary", fmt.Sprintf("%s.%s", cd.Name, cd.Namespace)).Infof("VirtualService %s.%s created", virtualService.GetName(), cd.Namespace)
-	} else if !reflect.DeepEqual(virtualService.Spec, newSpec) {
+	} else if !reflect.DeepEqual(virtualService.Spec.Hosts, newSpec.Hosts) || !reflect.DeepEqual(virtualService.Spec.Gateways, newSpec.Gateways) {
 		virtualService.Spec = newSpec
 		c.logger.Debugf("Updating VirtualService %s.%s", virtualService.GetName(), cd.Namespace)
 		_, err = c.istioClient.NetworkingV1alpha3().VirtualServices(cd.Namespace).Update(virtualService)