diff --git a/web/app/assets/javascripts/layout.js b/web/app/assets/javascripts/layout.js
index 167d973f5..d8c20dd74 100644
--- a/web/app/assets/javascripts/layout.js
+++ b/web/app/assets/javascripts/layout.js
@@ -740,8 +740,8 @@
     }
 
     function isTextMessageInUrl() {
-      const hash = context.location.hash;
-      const regexp = /\S+\/text-message\/d1=/ 
+      var hash = context.location.hash;
+      var regexp = /\S+\/text-message\/d1=/ 
       return regexp.test(hash);
     }