diff --git a/pkgs/applications/window-managers/cagebreak/default.nix b/pkgs/applications/window-managers/cagebreak/default.nix
index fe4b2be47929..124c1abe6f9c 100644
--- a/pkgs/applications/window-managers/cagebreak/default.nix
+++ b/pkgs/applications/window-managers/cagebreak/default.nix
@@ -74,7 +74,8 @@ stdenv.mkDerivation rec {
   '';
 
   postFixup = lib.optionalString withXwayland ''
-    wrapProgram $out/bin/cagebreak --prefix PATH : "${xwayland}/bin"
+    wrapProgram $out/bin/cagebreak \
+      --prefix PATH : "${lib.makeBinPath [ xwayland ]}"
   '';
 
   meta = with lib; {