diff --git a/test/spec_showexceptions.rb b/test/spec_showexceptions.rb
index a4ccef912..430c43a2c 100644
--- a/test/spec_showexceptions.rb
+++ b/test/spec_showexceptions.rb
@@ -92,7 +92,7 @@ def show_exceptions(app)
       [{ "HTTP_ACCEPT" => "text/foo" }, true],
       [{ "HTTP_ACCEPT" => "text/html" }, false]
     ].each do |env, expected|
-      assert_equal(expected, exc.prefers_plaintext?(env))
+      expected.should.equal exc.prefers_plaintext?(env)
     end
   end
 end