diff --git a/apps/calendar/resettimezone.php b/apps/calendar/resettimezone.php
new file mode 100644
index 00000000000..1ef9591ae39
--- /dev/null
+++ b/apps/calendar/resettimezone.php
@@ -0,0 +1,4 @@
+<?php
+require_once ("../../lib/base.php"); 
+OC_Preferences::deleteKey(OC_USER::getUser(), 'calendar', 'timezone');
+?>
\ No newline at end of file