diff --git a/settings/js/apps-custom.php b/settings/js/apps-custom.php
index 9ec2a758ee..d827dfc705 100644
--- a/settings/js/apps-custom.php
+++ b/settings/js/apps-custom.php
@@ -23,4 +23,4 @@ foreach($combinedApps as $app) {
 	echo("\n");
 }
 
-echo ("var appid =\"".$_GET['appid']."\";");
\ No newline at end of file
+echo ("var appid =".json_encode($_GET['appid']).";");
\ No newline at end of file