diff --git a/scripts/upgrade b/scripts/upgrade
index 2b50d40..eef7a35 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -17,6 +17,7 @@ app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get $app domain)
 path_url=$(ynh_app_setting_get $app path)
+is_public=$(ynh_app_setting_get $is_public)
 final_path=$(ynh_app_setting_get $app final_path)
 config_path=$(ynh_app_setting_get $app config_path)
 state_path=$(ynh_app_setting_get $app state_path)