diff --git a/public/language/en-US/error.json b/public/language/en-US/error.json
index f12e15c94f..ae9a6eb41d 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.",
     "email-taken": "Email address is already 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 d8144d26d5..834790ed5e 100644
--- a/public/src/client/register.js
+++ b/public/src/client/register.js
@@ -183,9 +183,15 @@ define('forum/register', [
 	}
 
 	function showError(input, element, msg) {
-		translator.translate(msg, function (msg) {
+		translator.translate(msg, function (translatedMsg) {
 			input.attr('aria-invalid', 'true');
-			element.html(msg);
+			// Used chatgpt to add the feature of randomly generated suggested username
+			if (msg === '[[error:username-taken]]') {
+				const originalUsername = input.val();
+				const suggestedUsername = originalUsername + Math.floor(Math.random() * 1000);
+				translatedMsg += `<br>Suggested username: <strong>${suggestedUsername}</strong>`;
+			}
+			element.html(translatedMsg);
 			element.parent()
 				.removeClass('register-success')
 				.addClass('register-danger');