diff --git a/test/ruby/test_settracefunc.rb b/test/ruby/test_settracefunc.rb
index 951faa69d8..3641bd0916 100644
--- a/test/ruby/test_settracefunc.rb
+++ b/test/ruby/test_settracefunc.rb
@@ -2745,8 +2745,8 @@ CODE
       rescue SyntaxError
       end
     }
-    call_line = lines.shift
-    raise_line = lines.shift
+    _call_line = lines.shift
+    _raise_line = lines.shift
     assert_equal [], lines
   end