diff --git a/apps/contacts/thumbnail.php b/apps/contacts/thumbnail.php
index 8378507163ed383cb4f6506127473ac1d626ba2c..a69e9c74f72d1551a5bb4a24a84d7886e33f7285 100644
--- a/apps/contacts/thumbnail.php
+++ b/apps/contacts/thumbnail.php
@@ -23,7 +23,7 @@
 OCP\JSON::checkLoggedIn();
 //OCP\User::checkLoggedIn();
 OCP\App::checkAppEnabled('contacts');
-session_close_write();
+session_write_close();
 
 function getStandardImage(){
 	//OCP\Response::setExpiresHeader('P10D');