diff --git a/Zend/tests/bug67856.phpt b/Zend/tests/bug67856.phpt
index e867c8f37c4..b88df39341a 100644
--- a/Zend/tests/bug67856.phpt
+++ b/Zend/tests/bug67856.phpt
@@ -7,5 +7,16 @@ var_dump(array_reduce($array, function(&$a, &$b) {
     return $a + $b;
 }, 0));
 ?>
---EXPECT--
+--EXPECTF--
+Warning: {closure}(): Argument #1 ($a) must be passed by reference, value given in %s on line %d
+
+Warning: {closure}(): Argument #2 ($b) must be passed by reference, value given in %s on line %d
+
+Warning: {closure}(): Argument #1 ($a) must be passed by reference, value given in %s on line %d
+
+Warning: {closure}(): Argument #2 ($b) must be passed by reference, value given in %s on line %d
+
+Warning: {closure}(): Argument #1 ($a) must be passed by reference, value given in %s on line %d
+
+Warning: {closure}(): Argument #2 ($b) must be passed by reference, value given in %s on line %d
 int(6)