diff --git a/ChangeLog b/ChangeLog
index 1daa95afb9..6343a87f57 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Oct 31 01:38:14 2003  NAKAMURA Usaku <usa@ruby-lang.org>
+
+	* wince/Makefile.sub, win32/Makefile.sub (.y.c): allow white spaces
+	  at the beginning of line to remove by sed. (ruby-bugs-ja PR#580)
+
 Fri Oct 31 01:02:24 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* compar.c (cmp_equal): protect exceptions from <=> comparison
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index cc136ff281..0922ee2e19 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -513,7 +513,7 @@ $(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(RUBY_SO_NAME).rc: rbconfig.rb
 
 {$(srcdir)}.y.c:
 	$(YACC) $(YFLAGS) $(<:\=/)
-	sed -e "s!^extern char \*getenv();!/* & */!;s/^\(#.*\)y\.tab/\1parse/" y.tab.c > $@
+	sed -e "s!^ *extern char \*getenv();!/* & */!;s/^\(#.*\)y\.tab/\1parse/" y.tab.c > $@
 	@del y.tab.c
 
 {$(srcdir)}parse.c: parse.y
diff --git a/wince/Makefile.sub b/wince/Makefile.sub
index f8ed157f16..5a7178fcba 100644
--- a/wince/Makefile.sub
+++ b/wince/Makefile.sub
@@ -553,7 +553,7 @@ $(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(RUBY_SO_NAME).rc: rbconfig.rb
 
 {$(srcdir)}.y.c:
 	$(YACC) $(YFLAGS) $(<:\=/)
-	sed -e "s!^extern char \*getenv();!/* & */!;s/^\(#.*\)y\.tab/\1parse/" y.tab.c > $@
+	sed -e "s!^ *extern char \*getenv();!/* & */!;s/^\(#.*\)y\.tab/\1parse/" y.tab.c > $@
 	@del y.tab.c
 
 {$(srcdir)}parse.c: parse.y