diff --git a/sc/Emacs.sc b/sc/Emacs.sc
index d05ace9..57668d1 100644
--- a/sc/Emacs.sc
+++ b/sc/Emacs.sc
@@ -211,6 +211,7 @@ Emacs {
 		var outFileName, newServer;
 		Class.initClassTree(EmacsInterface);
 		Class.initClassTree(EmacsDocument);
+		Class.initClassTree(AbstractResponderProxy);
 		Class.initClassTree(OSCresponder);
 		Class.initClassTree(Server);
 		requestHandlers = IdentityDictionary.new;