diff --git a/test/test_rake_rake_test_loader.rb b/test/test_rake_rake_test_loader.rb
index 67b51e745..800e496b0 100644
--- a/test/test_rake_rake_test_loader.rb
+++ b/test/test_rake_rake_test_loader.rb
@@ -54,7 +54,7 @@ def test_load_error_raised_implicitly
         load @loader
       end
 
-      assert_match /.* -- superkalifragilisticoespialidoso/, exc.message
+      assert_match(/.* -- superkalifragilisticoespialidoso/, exc.message)
     end
     assert_empty out
     assert_empty err