diff --git a/scripts/install b/scripts/install
index 93988b3..4f402c0 100644
--- a/scripts/install
+++ b/scripts/install
@@ -110,6 +110,7 @@ ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_script_progression --message="Creating a MySQL database..."
 
 db_name=$(ynh_sanitize_dbid --db_name=$app)
+db_user=$db_name
 ynh_app_setting_set --app=$app --key=db_name --value=$db_name
 ynh_mysql_setup_db --db_user=$db_name --db_name=$db_name
 
diff --git a/scripts/upgrade b/scripts/upgrade
index d6f402f..393eb76 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -27,6 +27,7 @@ final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 port=$(ynh_app_setting_get --app=$app --key=port)
 export=$(ynh_app_setting_get --app=$app --key=export)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
 ynh_print_OFF; password=$(ynh_app_setting_get --app=$app --key=password); ynh_print_ON
 mypads=$(ynh_app_setting_get --app=$app --key=mypads)