diff --git a/ct/backrest.sh b/ct/backrest.sh
index 5eee8e8..8c733b3 100644
--- a/ct/backrest.sh
+++ b/ct/backrest.sh
@@ -10,7 +10,7 @@ var_tags="${var_tags:-backup}"
 var_cpu="${var_cpu:-1}"
 var_ram="${var_ram:-512}"
 var_disk="${var_disk:-8}"
-var_os="${var_os:-ubuntu}"
+var_os="${var_os:-debian}"
 var_version="${var_version:-24.04}"
 var_unprivileged="${var_unprivileged:-1}"