diff --git a/test/did_you_mean/spell_checking/test_uncorrectable_name_check.rb b/test/did_you_mean/spell_checking/test_uncorrectable_name_check.rb
index 2fa65bb699..9e83f6eb51 100644
--- a/test/did_you_mean/spell_checking/test_uncorrectable_name_check.rb
+++ b/test/did_you_mean/spell_checking/test_uncorrectable_name_check.rb
@@ -10,6 +10,6 @@ class UncorrectableNameCheckTest < Test::Unit::TestCase
   end
 
   def test_message
-    assert_not_match /Did you mean\?/, @error.message
+    assert_not_match(/Did you mean\?/, @error.message)
   end
 end