diff --git a/lass/3modules/xjail.nix b/lass/3modules/xjail.nix
index 526e12db7..f94e7ebbf 100644
--- a/lass/3modules/xjail.nix
+++ b/lass/3modules/xjail.nix
@@ -48,6 +48,7 @@ with import <stockholm/lib>;
         wm = mkOption {
           #TODO find type
           type = types.str;
+          defaultText = "‹script›";
           default = "${pkgs.writeHaskellPackage "xephyrify-xmonad" {
             executables.xmonad = {
               extra-depends = [