diff --git a/app/Util/Lexer/RestrictedNames.php b/app/Util/Lexer/RestrictedNames.php
index 5fe8d4d38..21f584733 100644
--- a/app/Util/Lexer/RestrictedNames.php
+++ b/app/Util/Lexer/RestrictedNames.php
@@ -171,6 +171,8 @@ class RestrictedNames
      'tour',
      'user',
      'users',
+     'username',
+     'usernames',
      'vendor',
      'ws',
      'wss',