diff --git a/core/email.class.inc.php b/core/email.class.inc.php
index d0b8e14f9..df40120a7 100644
--- a/core/email.class.inc.php
+++ b/core/email.class.inc.php
@@ -309,7 +309,7 @@ IssueLog::Info(__METHOD__.' '.$this->m_oMessage->toString());
 	{
 		if (($sMimeType === 'text/html') && ($sCustomStyles !== null))
 		{
-			require_once(APPROOT.'lib/emogrifier/classes/emogrifier.php');
+			require_once(APPROOT.'lib/emogrifier/Classes/Emogrifier.php');
 			$emogrifier = new \Pelago\Emogrifier($sBody, $sCustomStyles);
 			$sBody = $emogrifier->emogrify(); // Adds html/body tags if not already present
 		}