diff --git a/History.txt b/History.txt
index 5d6a03cd..ab504a7d 100644
--- a/History.txt
+++ b/History.txt
@@ -1,6 +1,7 @@
 == HEAD
   * Minor Enhancements
     * Add ability to explicitly specify included files (#261)
+    * Add --default-mimetype option (#279)
 
 == 0.11.2 / 2011-12-27
   * Bug Fixes
diff --git a/bin/jekyll b/bin/jekyll
index 5e77c156..f639b2ec 100755
--- a/bin/jekyll
+++ b/bin/jekyll
@@ -272,7 +272,7 @@ if options['server']
   mime_types = WEBrick::HTTPUtils::DefaultMimeTypes
   mime_types.store 'js', 'application/javascript'
   if options['default-mimetype']
-    mime_types.store nil, options['default-mimetype']
+    mime_types.store(nil, options['default-mimetype'])
   end
 
   s = HTTPServer.new(