From 3d693f24407f54115d3508e512397d293198f121 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?E=CC=81ric=20Gaspar?=
 <46165813+ericgaspar@users.noreply.github.com>
Date: Sun, 19 Mar 2023 15:50:15 +0100
Subject: [PATCH] Update upgrade

---
 scripts/upgrade | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/upgrade b/scripts/upgrade
index 9e0714e..9c30fba 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -23,13 +23,13 @@ upgrade_type=$(ynh_check_app_version_changed)
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
 # If fpm_footprint doesn't exist, create it
-if [ -z "$fpm_footprint" ]; then
+if [ -z "${fpm_footprint:-}" ]; then
 	fpm_footprint=low
 	ynh_app_setting_set --app=$app --key=fpm_footprint --value=$fpm_footprint
 fi
 
 # If fpm_usage doesn't exist, create it
-if [ -z "$fpm_usage" ]; then
+if [ -z "${fpm_usage:-}" ]; then
 	fpm_usage=low
 	ynh_app_setting_set --app=$app --key=fpm_usage --value=$fpm_usage
 fi