diff --git a/Library/Homebrew/test/test_formula_validation.rb b/Library/Homebrew/test/test_formula_validation.rb
index 05dd2052f1a9702204acc8b016d83f35bbcba006..44f789584e0449f5f13d51226b6020b9b153177f 100644
--- a/Library/Homebrew/test/test_formula_validation.rb
+++ b/Library/Homebrew/test/test_formula_validation.rb
@@ -62,12 +62,12 @@ class FormulaValidationTests < Homebrew::TestCase
       end
     end
 
-    assert_equal "foo", f.url
+    assert_predicate f, :devel?
   end
 
   def test_head_only_valid
     f = formula { head "foo" }
-    assert_equal "foo", f.url
+    assert_predicate f, :head?
   end
 
   def test_empty_formula_invalid