diff --git a/packages/worker/src/api/controllers/global/users.ts b/packages/worker/src/api/controllers/global/users.ts
index 8de9afd24b..28ba97b4e2 100644
--- a/packages/worker/src/api/controllers/global/users.ts
+++ b/packages/worker/src/api/controllers/global/users.ts
@@ -388,6 +388,7 @@ export const inviteAccept = async (
         type: LockType.AUTO_EXTEND,
         name: LockName.PROCESS_USER_INVITE,
         resource: inviteCode,
+        systemLock: true,
       },
       async () => {
         // info is an extension of the user object that was stored by global