diff --git a/ChangeLog b/ChangeLog
index cbbed2efd3..e028100cd6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Sep 16 08:27:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/etc/extconf.rb: use expanded sysconfdir with empty DESTDIR.
+	  [ruby-core:32394]
+
 Wed Sep 15 13:37:00 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
 
 	* test/net/imap/test_imap.rb: "localhost" not guaranteed to
diff --git a/ext/etc/extconf.rb b/ext/etc/extconf.rb
index 7293d7b805..1967560cd4 100644
--- a/ext/etc/extconf.rb
+++ b/ext/etc/extconf.rb
@@ -4,7 +4,7 @@ have_library("sun", "getpwnam")	# NIS (== YP) interface for IRIX 4
 a = have_func("getlogin")
 b = have_func("getpwent")
 c = have_func("getgrent")
-sysconfdir = RbConfig.expand(RbConfig::MAKEFILE_CONFIG["sysconfdir"].dup, "prefix"=>"")
+sysconfdir = RbConfig.expand(RbConfig::CONFIG["sysconfdir"].dup, "prefix"=>"", "DESTDIR"=>"")
 $defs.push("-DSYSCONFDIR=#{Shellwords.escape(sysconfdir.dump)}")
 if  a or b or c or sysconfdir
   have_struct_member('struct passwd', 'pw_gecos', 'pwd.h')
diff --git a/version.h b/version.h
index 92c832f4d0..eefac72ed6 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.2"
-#define RUBY_PATCHLEVEL 44
+#define RUBY_PATCHLEVEL 45
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1