diff --git a/ChangeLog b/ChangeLog
index b91d18aa1d..d44d5c6c23 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jan 29 21:40:12 2013  Tanaka Akira  <akr@fsij.org>
+
+	* lib/net/http/generic_request.rb (encode_multipart_form_data): remove
+	  tempfile explicitly.
+
 Tue Jan 29 19:27:18 2013  Benoit Daloze  <eregontp@gmail.com>
 
 	* array.c: Improve documentation about
diff --git a/lib/net/http/generic_request.rb b/lib/net/http/generic_request.rb
index 568131fe8d..e822ac9181 100644
--- a/lib/net/http/generic_request.rb
+++ b/lib/net/http/generic_request.rb
@@ -207,6 +207,7 @@ class Net::HTTPGenericRequest
       self.content_length = file.size
       write_header sock, ver, path
       IO.copy_stream(file, sock)
+      file.close(true)
     end
   end