diff --git a/test/support/console_test_case.rb b/test/support/console_test_case.rb
index 821cfc824..49e0bb87f 100644
--- a/test/support/console_test_case.rb
+++ b/test/support/console_test_case.rb
@@ -98,7 +98,7 @@ def debug_code(program, remote: true, &test_steps)
 
               th.each do |t|
                 if fail_msg = t.join.value
-                  th.each(&:kill)
+                  th.each{|t| t.raise Test::Unit::AssertionFailedError}
                   flunk fail_msg
                 end
               end