diff --git a/test/test_rake_functional.rb b/test/test_rake_functional.rb
index afc31d28f..658cb5aac 100644
--- a/test/test_rake_functional.rb
+++ b/test/test_rake_functional.rb
@@ -442,7 +442,7 @@ def test_comment_separated_from_task_by_blank_line_is_not_picked_up
 
     rake "-T"
 
-    refute_match("t2", @out)
+    refute_match(/t2/, @out)
   end
 
   def test_comment_after_desc_is_ignored