diff --git a/modules/kwin.nix b/modules/kwin.nix
index 2ff30b3b..8272d0cf 100644
--- a/modules/kwin.nix
+++ b/modules/kwin.nix
@@ -624,7 +624,11 @@ in
       }
     ];
 
-    home.packages = with pkgs; lib.optionals cfg.kwin.scripts.polonium.enable [ polonium ];
+    home.packages =
+      with pkgs;
+      lib.optionals (
+        if builtins.isBool cfg.kwin.scripts.polonium.enable then cfg.kwin.scripts.polonium.enable else false
+      ) [ polonium ];
 
     programs.plasma.configFile."kwinrc" = lib.mkMerge [
       # Titlebar buttons