diff --git a/scripts/upgrade b/scripts/upgrade
index 9454993..ae2fee8 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -15,6 +15,7 @@ source /usr/share/yunohost/helpers
 
 app=$YNH_APP_INSTANCE_NAME
 ssh_user=$(ynh_app_setting_get --app=$app --key=ssh_user)
+respository_folder=$(ynh_app_setting_get --app=$app --key=respository_folder)
 public_key=$(ynh_app_setting_get --app=$app --key=public_key)
 alert_delay=$(ynh_app_setting_get --app=$app --key=alert_delay)
 alert_mails=$(ynh_app_setting_get --app=$app --key=alert_mails)
@@ -77,6 +78,11 @@ if [ ! -f "/opt/borg-env/$(ynh_get_debian_release)" ] ; then
     ynh_secure_remove /opt/borg-env
 fi
 
+# If respository_folder setting is missing, set it to default value
+if [ -z "$respository_folder" ]; then
+	ynh_app_setting_set --app=$app --key=respository_folder --value=backup
+fi
+
 #=================================================
 # CREATE SSH USER USED BY BORG
 #=================================================