--- sigc++/Makefile.am.orig	2010-11-27 20:40:35.301189910 +0930
+++ sigc++/Makefile.am	2010-11-27 20:40:46.871110361 +0930
@@ -12,7 +12,7 @@
 sigc_built_h	= bind_return.h	\
 		  object_slot.h retype_return.h slot.h bind.h		\
 		  class_slot.h hide.h retype.h signal.h       \
-                  method_slot.h method_slot.h
+                  method_slot.h
 
 built_sources	= $(sigc_built_cc) $(sigc_built_h)
 dist_sources	= $(sigc_fixed_cc) $(sigc_fixed_h)