diff --git a/spec/homesick_spec.rb b/spec/homesick_spec.rb
index 3dbf3cd..b5ac78f 100644
--- a/spec/homesick_spec.rb
+++ b/spec/homesick_spec.rb
@@ -217,7 +217,7 @@ describe "homesick" do
 
       tracked_file = castle.join('some/nested/directory/')
       tracked_file.should exist
-      File.realdirpath(some_nested_dir).should == File.realdirpath(tracked_file)
+      some_nested_dir.realpath.should == tracked_file.realpath
     end
 
     describe "subdir_file" do