diff --git a/caimira/apps/calculator/static/js/form.js b/caimira/apps/calculator/static/js/form.js
index b84f9376..25ca0af4 100644
--- a/caimira/apps/calculator/static/js/form.js
+++ b/caimira/apps/calculator/static/js/form.js
@@ -303,7 +303,7 @@ function show_sensors_data(url) {
         }
       },
       error: function() {
-        alert('One error occured.');
+        alert('Authentication Error - Something went wrong during the authentication process.');
       },
     });
   }