diff --git a/maas/region/single.yml b/maas/region/single.yml
index 3569fff..74bcea1 100644
--- a/maas/region/single.yml
+++ b/maas/region/single.yml
@@ -4,7 +4,7 @@
 parameters:
   _param:
     maas_admin_username: mirantis
-    maas_region_main_archive: http://mirror.mirantis.com/${_param:apt_mk_version}/ubuntu/
+    maas_region_main_archive: http://mirror.mirantis.com/${_param:mcp_version}/ubuntu/
   maas:
     cluster:
       enabled: true