diff --git a/nixos/modules/services/audio/mpd.nix b/nixos/modules/services/audio/mpd.nix
index 5afe5f8f46fe..d9b5bf7b5e6f 100644
--- a/nixos/modules/services/audio/mpd.nix
+++ b/nixos/modules/services/audio/mpd.nix
@@ -125,6 +125,7 @@ in {
     });
 
     users.extraGroups = optionalAttrs (cfg.group == "mpd") (singleton {
+      name = "mpd";
       gid = gid;
     });
   };