diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 81de76ed5..302a19093 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.21.15",
+    "version": "2.21.16",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/entry/master.ts b/packages/hydrooj/src/entry/master.ts
index 05e2b387a..6081bf151 100644
--- a/packages/hydrooj/src/entry/master.ts
+++ b/packages/hydrooj/src/entry/master.ts
@@ -75,8 +75,12 @@ export async function load(call: Entry) {
     while (dbVer < expected) {
         logger.info('Upgrading database: from %d to %d', dbVer, expected);
         const func = scripts[dbVer];
+        if (typeof func !== 'function') {
+            dbVer++;
+            continue;
+        }
         if (isFresh) {
-            if (typeof func !== 'function' || func.toString().includes('_FRESH_INSTALL_IGNORE')) {
+            if (func.toString().includes('_FRESH_INSTALL_IGNORE')) {
                 dbVer++;
                 continue;
             }
@@ -86,6 +90,6 @@ export async function load(call: Entry) {
         dbVer++;
         await modelSystem.set('db.ver', dbVer);
     }
-    bus.serial('app/started');
+    await bus.serial('app/started');
     return await modelSystem.get('server.worker');
 }