diff --git a/lib/swt/full.rb b/lib/swt/full.rb
index c17a9e1..8efc1f7 100644
--- a/lib/swt/full.rb
+++ b/lib/swt/full.rb
@@ -99,7 +99,7 @@ def self.bot
 end
 
 module JFace
-  Dir[File.dirname(__FILE__) + "/../../vendor/jface/*.jar"].each do |jar_fn|
+  Dir[File.expand_path "../../../vendor/jface/*.jar", __FILE__].each do |jar_fn|
     require jar_fn
   end