diff --git a/plugins/tasklist/drivers/database/tasklist_database_driver.php b/plugins/tasklist/drivers/database/tasklist_database_driver.php
index 56f4cf71..fe2733cb 100644
--- a/plugins/tasklist/drivers/database/tasklist_database_driver.php
+++ b/plugins/tasklist/drivers/database/tasklist_database_driver.php
@@ -656,7 +656,7 @@ class tasklist_database_driver extends tasklist_driver
     private function _get_notification($task)
     {
         if ($task['alarms'] && $task['complete'] < 1 || strpos($task['alarms'], '@') !== false) {
-            $alarm = calendarlibcalendaring::get_next_alarm($task);
+            $alarm = libcalendaring::get_next_alarm($task);
 
         if ($alarm['time'] && $alarm['action'] == 'DISPLAY')
           return date('Y-m-d H:i:s', $alarm['time']);