diff --git a/ChangeLog b/ChangeLog
index 670874d378..03dbe8c9b4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jan 30 12:57:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* cygwin/GNUmakefile.in (RUBYDEF): adds DATA to non-function symbols
+	  which is not marked as T.
+
 Fri Jan 30 11:03:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/test/unit/assertions.rb (assert_respond_to): gets rid of
diff --git a/cygwin/GNUmakefile.in b/cygwin/GNUmakefile.in
index f12c46534c..c40e1285a0 100644
--- a/cygwin/GNUmakefile.in
+++ b/cygwin/GNUmakefile.in
@@ -71,7 +71,7 @@ $(RUBYDEF): $(LIBRUBY_A) $(PREP) $(RBCONFIG)
 ifeq (@target_os@,cygwin)
 	@NM@ --extern --defined $(LIBRUBY_A) | \
 	  $(MINIRUBY) -n -e 'BEGIN{puts "VERSION $(MAJOR).$(MINOR)","EXPORTS"}' \
-			 -e 'if / (?:(T)|[A-Z]) _((?!Init_).*)$$/; puts "#{$$2}#{" DATA" if $$1}"; end' > $@
+			 -e 'if / (?:(T)|[A-Z]) _((?!Init_).*)$$/; puts "#{$$2}#{" DATA" if !$$1}"; end' > $@
 else
 	$(MINIRUBY) $(srcdir)/win32/mkexports.rb -output=$@ $(LIBRUBY_A)
 endif