diff --git a/components/engine/daemon/cluster/services.go b/components/engine/daemon/cluster/services.go
index ec5a58c02d..865f424c2a 100644
--- a/components/engine/daemon/cluster/services.go
+++ b/components/engine/daemon/cluster/services.go
@@ -193,7 +193,7 @@ func (c *Cluster) UpdateService(serviceIDOrName string, version uint64, spec typ
 			}
 		}
 
-		resp := &apitypes.ServiceUpdateResponse{}
+		resp = &apitypes.ServiceUpdateResponse{}
 
 		// pin image by digest
 		if os.Getenv("DOCKER_SERVICE_PREFER_OFFLINE_IMAGE") != "1" {