diff --git a/public/language/en-US/error.json b/public/language/en-US/error.json
index 4191fad..349c5cb 100644
--- a/public/language/en-US/error.json
+++ b/public/language/en-US/error.json
@@ -31,7 +31,7 @@
     "invalid-path": "Invalid path",
     "folder-exists": "Folder exists",
     "invalid-pagination-value": "Invalid pagination value, must be at least %1 and at most %2",
-    "username-taken": "Username taken",
+    "username-taken": "Username taken. Try %1",
     "email-taken": "Email taken",
     "email-nochange": "The email entered is the same as the email already on file.",
     "email-invited": "Email was already invited",
diff --git a/public/src/client/register.js b/public/src/client/register.js
index 62dbc41..6e4eb95 100644
--- a/public/src/client/register.js
+++ b/public/src/client/register.js
@@ -111,6 +111,7 @@ define('forum/register', [
         $('#username').focus();
     };
 
+    // error lies within this function
     function validateUsername(username, callback) {
         callback = callback || function () {};
 
@@ -131,7 +132,11 @@ define('forum/register', [
                 if (results.every(obj => obj.status === 'rejected')) {
                     showSuccess(username_notify, successIcon);
                 } else {
-                    showError(username_notify, '[[error:username-taken]]');
+                    // this is the case where the already username is taken
+                    // I added a new suffix and add it into the username
+                    const suffix = '1234';
+                    showError(username_notify, `[[error:username-taken, ${username}${suffix}]]`);
+                    // showError(username_notify, `Username taken. Try ${username}${suffix}]]`);
                 }
 
                 callback();