diff --git a/application/Api/v1/CalendarApicontroller.php b/application/Api/v1/CalendarApicontroller.php
index b68eafed9..9a50720c9 100644
--- a/application/Api/v1/CalendarApicontroller.php
+++ b/application/Api/v1/CalendarApicontroller.php
@@ -57,8 +57,11 @@ WHERE `TimerecordingCategory`.`hourday`!='1' AND `TimerecordingCategory`.`hourda
         //AND `Timerecording`.`user_id` = '173'
         $res = $db->query($sql);
         if ($db->num_rows($res)) {
-            while ($data = $db->fetch_array($res)) {
 
+            while ($data = $db->fetch_array($res)) {
+                if (!$data['end_time']) {
+                    continue;
+                }
                 if ($data['CategoryId'] != 11) {
                     $data['start_time'] = $data['start_time'];
                     $all_day_event = 1;