diff --git a/krebs/1systems/wolf/config.nix b/krebs/1systems/wolf/config.nix
index 4c73198ca..5a9a481bf 100644
--- a/krebs/1systems/wolf/config.nix
+++ b/krebs/1systems/wolf/config.nix
@@ -27,6 +27,8 @@ in
     <stockholm/krebs/2configs/shack/muellshack.nix>
     # provide light control api
     <stockholm/krebs/2configs/shack/node-light.nix>
+    # send mail if muell was not handled
+    <stockholm/krebs/2configs/shack/muell_mail.nix>
 
     # create samba share for anonymous usage with the laser and 3d printer pc
     <stockholm/krebs/2configs/shack/share.nix>