diff --git a/scripts/change_url b/scripts/change_url
index 42ec4d0..b708a57 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -31,6 +31,7 @@ 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_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
+redis_db=$(ynh_app_setting_get --app=$app --key=redis_db)
 
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP