diff --git a/templates/protostar/error.php b/templates/protostar/error.php
index 773592f91a7c8..d13f17ac3ad63 100644
--- a/templates/protostar/error.php
+++ b/templates/protostar/error.php
@@ -75,6 +75,9 @@
 	<?php if ($this->direction === 'rtl') : ?>
 		<link href="<?php echo JUri::root(true); ?>/media/jui/css/bootstrap-rtl.css" rel="stylesheet" />
 	<?php endif; ?>
+	<?php if (file_exists('templates/' . $this->template . '/css/user.css')) : ?>
+		<link href="<?php echo $this->baseurl; ?>/templates/<?php echo $this->template; ?>/css/user.css" rel="stylesheet" />
+	<?php endif; ?>
 	<link href="<?php echo $this->baseurl; ?>/templates/<?php echo $this->template; ?>/favicon.ico" rel="shortcut icon" type="image/vnd.microsoft.icon" />
 	<?php // Template color ?>
 	<?php if ($params->get('templateColor')) : ?>