diff --git a/server/service/user_group.go b/server/service/user_group.go
index 67b618a..58af149 100644
--- a/server/service/user_group.go
+++ b/server/service/user_group.go
@@ -82,7 +82,7 @@ func (service userGroupService) Update(userGroupId string, name string, members
 		return constant.ErrNameAlreadyUsed
 	}
 
-	if !errors.Is(gorm.ErrRecordNotFound, err) {
+	if errors.Is(gorm.ErrRecordNotFound, err) {
 		return err
 	}