diff --git a/scripts/upgrade b/scripts/upgrade
index e335ab9..666b8c8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -22,6 +22,7 @@ admin=$(ynh_app_setting_get --app=$app --key=admin)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 language=$(ynh_app_setting_get --app=$app --key=language)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
 random_key=$(ynh_app_setting_get --app=$app --key=random_key)
 email=$(ynh_user_get_info --username=$admin --key=mail)