--- libs/pbd/pbd/base_ui.h	2007-05-10 13:30:44.000000000 +0200
+++ libs/pbd/pbd/base_ui.h.new	2008-04-11 17:06:49.000000000 +0200
@@ -23,7 +23,7 @@
 #include <string>
 #include <stdint.h>
 
-#include <sigc++/slot.h>
+#include <sigc++/signal.h>
 #include <sigc++/trackable.h>
 
 class BaseUI : virtual public sigc::trackable {