diff --git a/Zend/tests/stack_limit/stack_limit_015.phpt b/Zend/tests/stack_limit/stack_limit_015.phpt
index b725523b7840..88ff544e9f33 100644
--- a/Zend/tests/stack_limit/stack_limit_015.phpt
+++ b/Zend/tests/stack_limit/stack_limit_015.phpt
@@ -9,7 +9,7 @@ if (!function_exists('zend_test_zend_call_stack_get')) die("skip zend_test_zend_
 --EXTENSIONS--
 zend_test
 --INI--
-zend.max_allowed_stack_size=128K
+zend.max_allowed_stack_size=64K
 --FILE--
 <?php