diff --git a/lib/gollum/committer.rb b/lib/gollum/committer.rb
index 04baa314..002a9531 100644
--- a/lib/gollum/committer.rb
+++ b/lib/gollum/committer.rb
@@ -118,7 +118,7 @@ module Gollum
     def update_working_dir(dir, name, format)
       unless @wiki.repo.bare
         if @wiki.page_file_dir
-          dir = dir.size.zero? ? @wiki.page_file_dir : File.join(dir, @wiki.page_file_dir)
+          dir = dir.size.zero? ? @wiki.page_file_dir : ::File.join(dir, @wiki.page_file_dir)
         end
 
         path =