diff --git a/www/common/cryptpad-common.js b/www/common/cryptpad-common.js
index 481e33bd1..e842f9b6c 100644
--- a/www/common/cryptpad-common.js
+++ b/www/common/cryptpad-common.js
@@ -75,6 +75,8 @@ define([
         ].forEach(function (k) {
             sessionStorage.removeItem(k);
             localStorage.removeItem(k);
+            delete localStorage[k];
+            delete sessionStorage[k];
         });
         if (cb) { cb(); }
     };