diff --git a/flake.nix b/flake.nix
index 27098dc..0d3aa0e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,7 @@
   outputs = { self, nixpkgs, flake-utils, emacs-overlay }: let
     mkEmacs = pkgs: v: pkgs.emacsWithPackagesFromUsePackage {
       config = ./main.org;
-      package = pkgs."${v}${pkgs.lib.optionalString pkgs.stdenv.isDarwin "-macport"}";
+      package = pkgs."${v}${if pkgs.stdenv.isDarwin then "-macport" else "-pgtk"}";
     };    
   in (flake-utils.lib.eachDefaultSystem (system: let
       pkgs = import nixpkgs {