diff --git a/nixos/modules/services/display-managers/ly.nix b/nixos/modules/services/display-managers/ly.nix
index 3dded8ed0624..d9505c440a43 100644
--- a/nixos/modules/services/display-managers/ly.nix
+++ b/nixos/modules/services/display-managers/ly.nix
@@ -65,13 +65,7 @@ in
       package = mkPackageOption pkgs [ "ly" ] { };
 
       settings = mkOption {
-        type =
-          with lib.types;
-          attrsOf (oneOf [
-            str
-            int
-            bool
-          ]);
+        type = with lib.types; attrsOf iniFmt.lib.types.atom;
         default = { };
         example = {
           load = false;