diff --git a/ChangeLog b/ChangeLog
index 4975ae1365..b57858e01a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,6 @@
-Sun Sep 23 21:44:20 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Sun Sep 23 21:45:14 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/mkmf.rb (LIBPATHFLAG): no needs to escape library path here.
 
 	* lib/mkmf.rb (MakeMakefile#configuration): make prefix paths
 	  internal to deal with in Makefile.
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 4734d5f60e..da06c0699a 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -2397,7 +2397,7 @@ MESSAGE
       "$(LDSHARED) #{OUTFLAG}$@ $(OBJS) " \
       "$(LIBPATH) $(DLDFLAGS) $(LOCAL_LIBS) $(LIBS)"
     end
-  LIBPATHFLAG = config_string('LIBPATHFLAG') || ' -L"%s"'
+  LIBPATHFLAG = config_string('LIBPATHFLAG') || ' -L%s'
   RPATHFLAG = config_string('RPATHFLAG') || ''
   LIBARG = config_string('LIBARG') || '-l%s'
   MAIN_DOES_NOTHING = config_string('MAIN_DOES_NOTHING') || 'int main(void) {return 0;}'