diff --git a/test/test_rake_task.rb b/test/test_rake_task.rb
index da1d0d82a..5b9605964 100644
--- a/test/test_rake_task.rb
+++ b/test/test_rake_task.rb
@@ -464,10 +464,10 @@ def test_suggests_valid_rake_task_names
     task :test
     error = assert_raises(RuntimeError) { Task[:testt] }
 
-    assert_match /Don\'t know how to build task \'testt\'/, error.message
+    assert_match(/Don\'t know how to build task \'testt\'/, error.message)
 
     if defined?(::DidYouMean::SpellChecker) && defined?(::DidYouMean::Formatter)
-      assert_match /Did you mean\?  test/, error.message
+      assert_match(/Did you mean\?  test/, error.message)
     end
   end
 end