diff --git a/postfix/map.jinja b/postfix/map.jinja
index 341d727..4d1ba96 100644
--- a/postfix/map.jinja
+++ b/postfix/map.jinja
@@ -2,13 +2,12 @@
 # vim: ft=jinja
 
 {% import_yaml "postfix/defaults.yaml" as defaults %}
-{% import_yaml "postfix/osmap.yaml" as osmap %}
+{% import_yaml "postfix/osfamilymap.yaml" as os_familymap %}
 
 {% set postfix = salt['grains.filter_by'](
     defaults,
     merge=salt['grains.filter_by'](
-        osmap,
-        grain='os',
+        os_familymap,
         merge=salt['pillar.get']('postfix:lookup', {}),
     ),
     base='postfix')
diff --git a/postfix/osmap.yaml b/postfix/osfamilymap.yaml
similarity index 100%
rename from postfix/osmap.yaml
rename to postfix/osfamilymap.yaml