diff --git a/api/service/Label.go b/api/service/Label.go
index f5b39d8..cb74cee 100644
--- a/api/service/Label.go
+++ b/api/service/Label.go
@@ -22,7 +22,8 @@ func (r *LabelService) AddLabel(req requests.AddLabel) (bool, error) {
 			return false, errors.New("请填写父级标签")
 		}
 
-		parentId, err := strconv.ParseInt(req.ParentId, 10, 64)
+		var err error
+		parentId, err = strconv.ParseInt(req.ParentId, 10, 64)
 		if err != nil {
 			return false, err
 		}