diff --git a/libraries/src/Application/SiteApplication.php b/libraries/src/Application/SiteApplication.php
index e0ca3b660ead3..c9091099ada1e 100644
--- a/libraries/src/Application/SiteApplication.php
+++ b/libraries/src/Application/SiteApplication.php
@@ -91,7 +91,7 @@ protected function authorise($itemid)
 
 				$url = \JRoute::_('index.php?option=com_users&view=login', false);
 
-				$this->enqueueMessage(\JText::_('JGLOBAL_YOU_MUST_LOGIN_FIRST'));
+				$this->enqueueMessage(\JText::_('JGLOBAL_YOU_MUST_LOGIN_FIRST'), 'error');
 				$this->redirect($url);
 			}
 			else