diff --git a/app.js b/app.js
index 5fa1f33..b4f87af 100644
--- a/app.js
+++ b/app.js
@@ -212,7 +212,7 @@ async function lock(key) {
     lockHash[key] = 1;
   }
   const oldTimes = lockHash[key];
-  while (lockHash[key] == oldTimes) {
+  while (lockHash[key] > oldTimes) {
     await sleep(0.01);
   }
 }