diff --git a/package.nix b/package.nix
index 7b0f740..c7124e7 100644
--- a/package.nix
+++ b/package.nix
@@ -24,7 +24,7 @@ in
 
     postInstall = ''
       wrapProgram $out/bin/${pname} \
-                  --prefix PATH : ${lib.getExe pkgs.gnome.zenity}
+                  --prefix PATH : ${lib.makeBinPath [pkgs.gnome.zenity]}
     '';
 
     meta = with lib; {