diff --git a/templates/protostar/index.php b/templates/protostar/index.php
index ea48a832aea79..42d9850dd7349 100644
--- a/templates/protostar/index.php
+++ b/templates/protostar/index.php
@@ -42,6 +42,14 @@
 // Add Stylesheets
 $doc->addStyleSheet($this->baseurl . '/templates/' . $this->template . '/css/template.css');
 
+// Check for a custom CSS file
+$userCss = JPATH_SITE . '/templates/' . $this->template . '/css/user.css';
+
+if (file_exists($userCss) && filesize($userCss) > 0)
+{
+	$doc->addStyleSheet('templates/' . $this->template . '/css/user.css');
+}
+
 // Load optional RTL Bootstrap CSS
 JHtml::_('bootstrap.loadCss', false, $this->direction);