diff --git a/lib/protodoc.rb b/lib/protodoc.rb
index 31311b0..8695707 100644
--- a/lib/protodoc.rb
+++ b/lib/protodoc.rb
@@ -21,6 +21,7 @@ module Protodoc
     include Environment
     
     def initialize(filename)
+      filename = File.join(filename.split('/'))
       @filename = File.expand_path(filename)
       @template = ERB.new(IO.read(@filename), nil, '%')
     end