diff --git a/scripts/install b/scripts/install
index 9b4399c..38bc65a 100755
--- a/scripts/install
+++ b/scripts/install
@@ -27,7 +27,7 @@ ynh_abort_if_errors
 domain=$YNH_APP_ARG_DOMAIN
 path_url="/Microsoft-Server-ActiveSync"
 #admin=$YNH_APP_ARG_ADMIN
-is_public=1
+is_public="1"
 #language=$YNH_APP_ARG_LANGUAGE
 #password=$YNH_APP_ARG_PASSWORD