diff --git a/ext/wddx/tests/bug73631.phpt b/ext/wddx/tests/bug73631.phpt
index 1fcde72dfee..59814fbc988 100644
--- a/ext/wddx/tests/bug73631.phpt
+++ b/ext/wddx/tests/bug73631.phpt
@@ -2,6 +2,8 @@
 Bug #73631 (Memory leak due to invalid wddx stack processing)
 --SKIPIF--
 <?php if (!extension_loaded("wddx")) print "skip"; ?>
+---XFAIL--
+Still has memory leaks in debug build.
 --FILE--
 <?php
 $xml = <<<EOF