diff --git a/lib/stasis/dev_mode.rb b/lib/stasis/dev_mode.rb
index 4e5ef44..022cc8b 100644
--- a/lib/stasis/dev_mode.rb
+++ b/lib/stasis/dev_mode.rb
@@ -14,6 +14,7 @@ def initialize(dir, options={})
 
       @dir = dir
       @options = options
+      @options[:development] ||= true
 
       @stasis = Stasis.new(*[ @dir, @options[:public], @options ].compact)
 
@@ -34,7 +35,7 @@ def initialize(dir, options={})
       dw.add_observer { render }
       dw.start
 
-      if options[:development]
+      if options[:development].is_a?(::Integer)
         mime_types = WEBrick::HTTPUtils::DefaultMimeTypes
         mime_types.store 'js', 'application/javascript'