diff --git a/ChangeLog b/ChangeLog
index f905ac5a5a..dbd1db2d27 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Jul 15 16:29:35 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/Makefile.sub (LIBPATHFLAG): path is already quoted in mkmf.rb.
+
 Wed Jul 15 06:21:50 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
 
 	* ext/tk/extconf.rb: --with-{tcl,tk}-dir doesn't work.[ruby-dev:38782]
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index c9d458220d..03e5d97c91 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -666,7 +666,7 @@ s,@BASERUBY@,$(BASERUBY),;t t
 s,@OUTFLAG@,$(OUTFLAG),;t t
 s,@COUTFLAG@,$(COUTFLAG),;t t
 s,@CPPOUTFILE@,-P,;t t
-s,@LIBPATHFLAG@, -libpath:"%s",;t t
+s,@LIBPATHFLAG@, -libpath:%s,;t t
 s,@RPATHFLAG@,,;t t
 s,@LIBARG@,%s.lib,;t t
 s,@LINK_SO@,$$(LDSHARED) -Fe$$(@) $$(OBJS) $$(LIBS) $$(LOCAL_LIBS) -link $$(DLDFLAGS) -implib:$$(*F:.so=)-$$(arch).lib -pdb:$$(*F:.so=)-$$(arch).pdb -def:$$(DEFFILE),;t t