diff --git a/cloud-init/cloudinit/distros/__init__.py b/cloud-init/cloudinit/distros/__init__.py

index 2599d9f..3c44209 100644

--- a/cloud-init/cloudinit/distros/__init__.py

+++ b/cloud-init/cloudinit/distros/__init__.py

@@ -43,6 +43,7 @@ OSFAMILIES = {

     'freebsd': ['freebsd'],

     'suse': ['sles'],

     'arch': ['arch'],

+    'alt': ['alt'],

 }

 LOG = logging.getLogger(__name__)