diff --git a/models/migrations/v1_27/v332.go b/models/migrations/v1_27/v332.go
index ec9320e8f6..8cf087d56e 100644
--- a/models/migrations/v1_27/v332.go
+++ b/models/migrations/v1_27/v332.go
@@ -14,5 +14,8 @@ func (mirrorWithLastSyncUnix) TableName() string {
 }
 
 func AddLastSyncUnixToMirror(x *xorm.Engine) error {
-	return x.Sync(new(mirrorWithLastSyncUnix))
+	_, err := x.SyncWithOptions(xorm.SyncOptions{
+		IgnoreDropIndices: true,
+	}, new(mirrorWithLastSyncUnix))
+	return err
 }