diff --git a/services/postgresql.nix b/services/postgresql.nix
index 6d380b8..474ebe2 100644
--- a/services/postgresql.nix
+++ b/services/postgresql.nix
@@ -11,7 +11,7 @@
       config.services.postgresql.dataDir
     ])
     (lib.serviceFilePerms "postgresql" [
-      "Z ${config.services.postgresql.dataDir} 0700 postgresql postgresql"
+      "Z ${config.services.postgresql.dataDir} 0700 postgres postgres"
     ])
   ];