diff --git a/server/lib/classes/monitor_tools.inc.php b/server/lib/classes/monitor_tools.inc.php
index e473472207ed7b308dcd0ffa615b2d591d814064..a44324528b0d1136de566060ec95bdc6f8ebae95 100644
--- a/server/lib/classes/monitor_tools.inc.php
+++ b/server/lib/classes/monitor_tools.inc.php
@@ -812,7 +812,7 @@ class monitor_tools {
 	}
 
 	public function send_notification_email($template, $placeholders, $recipients) {
-		global $conf;
+		global $app, $conf;
 
 		if(!is_array($recipients) || count($recipients) < 1) return false;
 		if(!is_array($placeholders)) $placeholders = array();