diff --git a/mastus/vmtest.nix b/mastus/vmtest.nix
index 6b76fca..95dd9f5 100644
--- a/mastus/vmtest.nix
+++ b/mastus/vmtest.nix
@@ -25,7 +25,7 @@ let
       elinks
       carddav-util
       fcgi
-      (haskell.lib.justStaticExecutables (haskellPackages.callPackage ../pkgs/wstunnel.nix {}))
+      wstunnel
     ];
 
     systemd.services."acme-gebner.org".serviceConfig.ExecStart = pkgs.lib.mkForce "true";