diff --git a/Zend/tests/arginfo_zpp_mismatch.inc b/Zend/tests/arginfo_zpp_mismatch.inc
index 2207d76db4..221c347aaa 100644
--- a/Zend/tests/arginfo_zpp_mismatch.inc
+++ b/Zend/tests/arginfo_zpp_mismatch.inc
@@ -23,6 +23,7 @@ function skipFunction($function): bool {
      || $function === 'mail'
      || $function === 'mb_send_mail'
      || $function === 'pcntl_fork'
+     || $function === 'pcntl_rfork'
      || $function === 'posix_kill'
      || $function === 'posix_setrlimit'
      || $function === 'sapi_windows_generate_ctrl_event'