diff --git a/templates/message.php b/templates/message.php
index 98a3fc8..eb43d2a 100644
--- a/templates/message.php
+++ b/templates/message.php
@@ -1,5 +1,7 @@
 <?php
 \OCP\Util::addStyle('registration', 'style');
+if ( \OCP\Util::getVersion()[0] >= 12 )
+        \OCP\Util::addStyle('core', 'guest')
 ?>
 <ul class="msg error-wide">
 	<li><?php print_unescaped($_['msg'])?></li>