template brain_backup - update condition - need some jinja lessons

templates/brain_backup.j2

@@ -86,7 +86,7 @@ find $backup_dir -type d -ctime +$backup_local_retention -exec rm -rf {} \;
 /usr/bin/proxmox-backup-client backup slash.pxar:/ \
 {% if backup_path_include is defined %}
 {% for item in backup_path_include %}
-{% if item.fs_mount %}--include-dev {{ item.path }} \{% endif %}
+{% if item.fs_mount is defined %}--include-dev {{ item.path }} \{% endif %}
 {% endfor %}
 {% endif %}
 {% if backup_pgsql_enabled is sameas true %}