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__)