diff --git a/postgres/osmap.yaml b/postgres/osmap.yaml
index 4a95413..f61fd72 100644
--- a/postgres/osmap.yaml
+++ b/postgres/osmap.yaml
@@ -97,14 +97,17 @@ Suse:
 
 MacOS:
   service: postgres
-  pkg: postgres
+  pkg: postgresql
   pkg_client:
   pkg_libpq_dev:
   conf_dir: /usr/local/var/postgres
+  user: _postgres
+  group: _postgres
   prepare_cluster:
     command: initdb -D /usr/local/var/postgres/
     test: test -f /usr/local/var/postgres/PG_VERSION
     user: _postgres
+    group: _postgres
 
 
 # vim: ft=sls