diff --git a/ChangeLog b/ChangeLog
index 2321e0adeb..f22e3c69b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Jul 19 00:53:46 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
+
+	* lib/webrick/httpservlet/cgihandler.rb
+	  (WEBrick::HTTPServlet::CGIhandler#do_GET): set SystemRoot environment
+	  variable to CGI process on Windows native platforms. [ruby-dev:23936]
+
 Sun Jul 18 16:14:29 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
 
 	* ext/tk/lib/tk/msgcat.rb (TkMsgCatalog.callback): bug fix
diff --git a/lib/webrick/httpservlet/cgihandler.rb b/lib/webrick/httpservlet/cgihandler.rb
index 36f5e44ead..7dd330ba7b 100644
--- a/lib/webrick/httpservlet/cgihandler.rb
+++ b/lib/webrick/httpservlet/cgihandler.rb
@@ -41,6 +41,9 @@ module WEBrick
           meta = req.meta_vars
           meta["SCRIPT_FILENAME"] = @script_filename
           meta["PATH"] = @config[:CGIPathEnv]
+          if /mswin|bccwin|mingw/ =~ RUBY_PLATFORM
+            meta["SystemRoot"] = ENV["SystemRoot"]
+          end
           dump = Marshal.dump(meta)
 
           cgi_in.write("%8d" % cgi_out.path.size)
@@ -56,7 +59,7 @@ module WEBrick
         ensure
           cgi_in.close
           status = $?.exitstatus
-          sleep 0.1 if /mswin/ =~ RUBY_PLATFORM
+          sleep 0.1 if /mswin|bccwin|mingw/ =~ RUBY_PLATFORM
           data = cgi_out.read
           cgi_out.close(true)
           if errmsg = cgi_err.read