diff --git a/ChangeLog b/ChangeLog
index 850f14f271..b6079e4dc4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Oct  7 18:10:35 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* cygwin/GNUmakefile.in, win32/Makefile.sub (RCFILES): depend on
+	  real config.rb file.  [ruby-core:32709]
+
 Thu Oct  7 09:14:28 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* vm_exec.c (vm_exec_core):  Treat clang as non gcc on this
diff --git a/cygwin/GNUmakefile.in b/cygwin/GNUmakefile.in
index eb6967aef5..5e2b467641 100644
--- a/cygwin/GNUmakefile.in
+++ b/cygwin/GNUmakefile.in
@@ -40,7 +40,7 @@ $(RUBY_EXP) $(LIBRUBY_SO): $(DLL_BASE_NAME).res.@OBJEXT@
 %.res.@OBJEXT@: %.rc
 	@WINDRES@ --include-dir . --include-dir $(<D) --include-dir $(srcdir)/win32 $< $@
 
-$(RCFILES): $(RBCONFIG)
+$(RCFILES): $(RBCONFIG) config.rb
 	@$(MINIRUBY) $(srcdir)/win32/resource.rb \
 	  -ruby_name=$(RUBY_INSTALL_NAME) -rubyw_name=$(RUBYW_INSTALL_NAME) \
 	  -so_name=$(DLL_BASE_NAME) \
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index 654e70b185..ebd51e9aca 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -237,6 +237,7 @@ CPPFLAGS = $(DEFS) $(ARCHDEFS) $(CPPFLAGS)
 
 DLDFLAGS = $(LDFLAGS) -dll
 SOLIBS = 
+RCFILES = $(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(RUBY_SO_NAME).rc
 
 LIBRUBY_LDSHARED = $(LDSHARED)
 LIBRUBY_DLDFLAGS = $(EXTLDFLAGS) -implib:dummy.lib -def:$(RUBYDEF)
@@ -873,7 +874,7 @@ clean-enc distclean-enc realclean-enc:
 	@-$(MAKE) -f $(ENC_MK) $(MFLAGS) $(@F)
 !endif
 
-$(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(RUBY_SO_NAME).rc: $(RBCONFIG) $(srcdir)/revision.h $(srcdir)/win32/resource.rb
+$(RCFILES): $(RBCONFIG) config.rb $(srcdir)/revision.h $(srcdir)/win32/resource.rb
 		@$(MINIRUBY) $(srcdir)/win32/resource.rb \
 			-ruby_name=$(RUBY_INSTALL_NAME) \
 			-rubyw_name=$(RUBYW_INSTALL_NAME) \