diff --git a/notifications/inc/class.notifications_ajax.inc.php b/notifications/inc/class.notifications_ajax.inc.php
index 758da29b0b..c0c65575db 100644
--- a/notifications/inc/class.notifications_ajax.inc.php
+++ b/notifications/inc/class.notifications_ajax.inc.php
@@ -233,7 +233,7 @@ class notifications_ajax
 
 		// cleanup messages older than our cut-off-date
 		$this->db->delete(self::_notification_table, [
-			'notification_created <= '.$cut_off,
+			'notify_created <= '.$cut_off,
 			'notify_type' => self::_type
 		], __LINE__, __FILE__, self::_appname);
 	}