diff --git a/nixos/modules/services/networking/freeradius.nix b/nixos/modules/services/networking/freeradius.nix
index 19e5b0af1c9d..d747219b29cb 100644
--- a/nixos/modules/services/networking/freeradius.nix
+++ b/nixos/modules/services/networking/freeradius.nix
@@ -74,7 +74,7 @@ in
         /*uid = config.ids.uids.radius;*/
         description = "Radius daemon user";
         isSystemUser = true;
-        groups = "radius";
+        group = "radius";
       };
       groups.radius = {};
     };