diff --git a/lib/bundler.rb b/lib/bundler.rb
index 52e80c4baf..2d5bbafee5 100644
--- a/lib/bundler.rb
+++ b/lib/bundler.rb
@@ -671,7 +671,7 @@ EOF
     end
 
     def configure_gem_home
-      Bundler::SharedHelpers.set_env "GEM_HOME", File.expand_path(bundle_path, root)
+      Bundler::SharedHelpers.set_env "GEM_HOME", bundle_path.to_s
       Bundler.rubygems.clear_paths
     end