diff --git a/scripts/backup b/scripts/backup
index 4846588..07affb9 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -56,6 +56,6 @@ ynh_backup "/var/lib/transmission-daemon"
 CHECK_SIZE "/home/yunohost.transmission"
 # The "--is big" parameter indicates that the file/directory requires "a lot of disk space"
 # It won't be backed up before 'upgrade' or while doing a 'backup' with:
-# "sudo BACKUP_CORE_ONLY=1 yunohost backup create --apps nextcloud"
+# "sudo BACKUP_CORE_ONLY=1 yunohost backup create --apps transmission"
 # See https://yunohost.org/#/backup
-ynh_backup "/home/yunohost.transmission" --is_big
+ynh_backup --src_path="/home/yunohost.transmission" --is_big
diff --git a/scripts/upgrade b/scripts/upgrade
index f7e0f8b..6f1ee20 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -156,7 +156,7 @@ systemctl reload nginx
 backup_core_only=$(ynh_app_setting_get $app backup_core_only)
 # If "backup_core_only" is still set in settings.yml, print a warning and run the upgrade as usual.
 # Setting is deleted at the end of the script to avoid side effect ("ynh_backup_before_upgrade" maybe).
-if [ -z $backup_core_only ]
+if [ "$backup_core_only" == "1" ]
 then
 	ynh_print_info --message="Setting 'backup_core_only' is deprecated and cannot be used anymore"
 	ynh_print_info --message="Modify your backup script accordingly or next backup will be huge. See https://github.com/YunoHost/doc/blob/master/backup.md#apps-specific-configuration"