diff --git a/module/user/ui/edit.html.php b/module/user/ui/edit.html.php
index 4f8430d23d..d6b774d5c8 100644
--- a/module/user/ui/edit.html.php
+++ b/module/user/ui/edit.html.php
@@ -171,7 +171,8 @@ formPanel
             set::width('1/2'),
             set::label($lang->user->account),
             set::name('account'),
-            set::value($user->account)
+            set::value($user->account),
+            set('readonly', true)
         ),
         formGroup
         (