diff --git a/nixos/modules/config/users-groups.nix b/nixos/modules/config/users-groups.nix
index 7d0498c10cc..0d3273fe053 100644
--- a/nixos/modules/config/users-groups.nix
+++ b/nixos/modules/config/users-groups.nix
@@ -310,9 +310,9 @@ let
       }) cfg.extraUsers;
     groups = mapAttrsToList (n: g:
       { inherit (g) name gid;
-        members = mapAttrsToList (n: u: u.name) (
+        members = g.members ++ (mapAttrsToList (n: u: u.name) (
           filterAttrs (n: u: elem g.name u.extraGroups) cfg.extraUsers
-        );
+        ));
       }) cfg.extraGroups;
   });