diff --git a/build/router/controller/ics.php b/build/router/controller/ics.php
index 757836a..24451e2 100644
--- a/build/router/controller/ics.php
+++ b/build/router/controller/ics.php
@@ -37,7 +37,7 @@
 			=========================================================*/
 			/* (1) Headers */
 			header('Content-Type: text/calendar; charset=utf-8');
-			header('Content-Disposition: attachment; filename='.$this->diplome_id);
+			header('Content-Disposition: attachment; filename='.$this->diplome_id.'.ics');
 
 			/* (2) Body */
 			readfile($file_name);