diff --git a/src/taskmanager.js b/src/taskmanager.js
index 168cfc590..cb2418b47 100644
--- a/src/taskmanager.js
+++ b/src/taskmanager.js
@@ -48,6 +48,8 @@ function uninitialize(callback) {
         stopAppTask(appId);
     }
 
+    locker.removeListener('unlocked', startNextTask);
+
     callback(null);
 }