diff --git a/bootstraptest/test_flow.rb b/bootstraptest/test_flow.rb
index ed273953de..edc6e46f10 100644
--- a/bootstraptest/test_flow.rb
+++ b/bootstraptest/test_flow.rb
@@ -552,7 +552,7 @@ end
 assert_equal %q{ok}, %q{
   $x = :ok
   o = Object.new
-  def o.inspect(*args)
+  def o.inspect
     yield if block_given?
     super
   end