diff --git a/ChangeLog b/ChangeLog
index cfe368a2c2..b361d8c132 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Apr 11 01:55:52 2002  Wakou Aoyama  <wakou@fsinet.or.jp>
+
+	* lib/cgi/session.rb: support for multipart form.
+
 Wed Apr 10 17:30:19 2002  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* variable.c (rb_obj_remove_instance_variable): raise NameError if
diff --git a/lib/cgi/session.rb b/lib/cgi/session.rb
index b5579bc340..bd5fd543f8 100644
--- a/lib/cgi/session.rb
+++ b/lib/cgi/session.rb
@@ -36,6 +36,7 @@ class CGI
       end
       unless id
 	id, = request[session_key]
+        id = id.read if id.respond_to?(:read)
 	unless id
 	  id, = request.cookies[session_key]
 	end