diff --git a/assets/js/main.js b/assets/js/main.js
index 9bd418a..6489e07 100755
--- a/assets/js/main.js
+++ b/assets/js/main.js
@@ -204,7 +204,7 @@ window.addEventListener('load', function() {
     $('.btn-robot-go').click(function() {
         // Get and validate the selected robot ID
         var robotId = $('#robot-id').val().trim();
-        if (robotId === '' || /^([a-f0-9]{8})$/.test(robotId) == false) {
+        if (robotId === '' || /^([a-zA-Z0-9]{8})$/.test(robotId) == false) {
             $('#robot-id, #robot-label').addClass('has-error');
             return;
         } else {