diff --git a/server/repo-mgr.c b/server/repo-mgr.c
index 5c9fa41..3571a4f 100644
--- a/server/repo-mgr.c
+++ b/server/repo-mgr.c
@@ -3936,8 +3936,10 @@ seaf_get_total_file_number (GError **error)
     int ret = seaf_db_statement_foreach_row (seaf->db,
                                              "SELECT SUM(file_count) FROM RepoFileCount f "
                                              "LEFT JOIN VirtualRepo v "
-                                             "ON f.repo_id=v.repo_id "
-                                             "WHERE v.repo_id IS NULL",
+                                             "ON f.repo_id=v.repo_id,"
+                                             "Repo r "
+                                             "WHERE v.repo_id IS NULL AND "
+                                             "f.repo_id=r.repo_id",
                                              get_total_file_number_cb,
                                              &count, 0);
     if (ret < 0) {