diff --git a/scripts/upgrade b/scripts/upgrade
index 8fe6ff0..fe3a8bf 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -21,6 +21,7 @@ path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 port=$(ynh_app_setting_get --app=$app --key=port)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
 datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 admin=$(ynh_app_setting_get --app=$app --key=admin)