diff --git a/test/test_fake_web.rb b/test/test_fake_web.rb
index f344612..682c43d 100644
--- a/test/test_fake_web.rb
+++ b/test/test_fake_web.rb
@@ -35,7 +35,9 @@ def test_response_for_with_wrong_number_of_arguments
   end
 
   def test_register_uri_without_domain_name
-    assert_raises URI::InvalidURIError do
+    # Ruby 2.1 and lower raises URI::InvalidURIError
+    # Ruby 2.2 and higher raises TypeError
+    assert_raises URI::InvalidURIError, TypeError do
       FakeWeb.register_uri(:get, 'test_example2.txt', fixture_path("test_example.txt"))
     end
   end