diff --git a/static/js/global_js.js b/static/js/global_js.js
index d85c2ce..0aec78d 100644
--- a/static/js/global_js.js
+++ b/static/js/global_js.js
@@ -9,7 +9,7 @@ function getNewMessageSession (){
        r[o[i].split("=")[0]] = o[i].split("=")[1];
     }
     let prs_ = null
-    if (r['user_alerts'] !== null || r['user_alerts']){
+    if (r['user_alerts'] !== undefined){
         let prs = JSON.parse(r['user_alerts'])
         prs_ = JSON.parse(prs)
     } else {