diff --git a/models/migrations/v1_25/v321.go b/models/migrations/v1_25/v321.go
index 308d7a9eba6..887540d070b 100644
--- a/models/migrations/v1_25/v321.go
+++ b/models/migrations/v1_25/v321.go
@@ -23,6 +23,6 @@ func AddBeforeCommitIDForComment(x *xorm.Engine) error {
 	}, new(comment)); err != nil {
 		return err
 	}
-	x.Exec("UPDATE comment SET before_commit_id = (SELECT merge_base FROM pull_request WHERE pull_request.issue_id = comment.issue_id) WHERE before_commit_id IS NULL")
-	return nil
+	_, err := x.Exec("UPDATE comment SET before_commit_id = (SELECT merge_base FROM pull_request WHERE pull_request.issue_id = comment.issue_id) WHERE before_commit_id IS NULL")
+	return err
 }