diff --git a/scripts/upgrade b/scripts/upgrade
index 4f84902..e4e1ebf 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -25,6 +25,7 @@ db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
 port=$(ynh_app_setting_get --app=$app --key=port)
+single_user=$(ynh_app_setting_get --app=$app --key=single_user)
 
 architecture=$(ynh_detect_arch)