diff --git a/lib/redmine_dmsf/webdav/dmsf_resource.rb b/lib/redmine_dmsf/webdav/dmsf_resource.rb
index 8ce33526..435a032e 100644
--- a/lib/redmine_dmsf/webdav/dmsf_resource.rb
+++ b/lib/redmine_dmsf/webdav/dmsf_resource.rb
@@ -618,6 +618,7 @@ module RedmineDmsf
 
         if new_revision.save
           if request.body.respond_to?(:rewind)
+            request.body.rewind
             new_revision.copy_file_content request.body
           else # A workaround for Webrick that doesn't support rewind
             stream = StringIO.new
diff --git a/test/integration/webdav/dmsf_webdav_put_test.rb b/test/integration/webdav/dmsf_webdav_put_test.rb
index 8cbbc9da..ef939e25 100644
--- a/test/integration/webdav/dmsf_webdav_put_test.rb
+++ b/test/integration/webdav/dmsf_webdav_put_test.rb
@@ -381,6 +381,7 @@ class DmsfWebdavPutTest < RedmineDmsf::Test::IntegrationTest
       assert_response :created
     end
     checksum = Digest::MD5.base64digest('1234')
+    @file1.last_revision = nil
     assert_equal checksum, @file1.last_revision.checksum
   end