diff --git a/features/post_data.feature b/features/post_data.feature
index 36fe9382..c6d45b04 100644
--- a/features/post_data.feature
+++ b/features/post_data.feature
@@ -31,10 +31,10 @@ Feature: Post data
     And I have the following post:
       | title     | date      | layout | content                 |
       | Star Wars | 3/27/2009 | simple | Luke, I am your father. |
-    And I have a simple layout that contains "Post date: {{ page.date }}"
+    And I have a simple layout that contains "Post date: {{ page.date | date_to_string }}"
     When I run jekyll
     Then the _site directory should exist
-    And I should see "Post date: Fri Mar 27" in "_site/2009/03/27/star-wars.html"
+    And I should see "Post date: 27 Mar 2009" in "_site/2009/03/27/star-wars.html"
 
   Scenario: Use post.id variable
     Given I have a _posts directory
diff --git a/features/support/env.rb b/features/support/env.rb
index c6642fd9..3166ce9c 100644
--- a/features/support/env.rb
+++ b/features/support/env.rb
@@ -16,4 +16,4 @@ def run_jekyll(opts = {})
 end
 
 # work around "invalid option: --format" cucumber bug (see #296)
-# Test::Unit.run = true
+Test::Unit.run = true if RUBY_VERSION < '1.9'