diff --git a/ext/spl/tests/GH-22047.phpt b/ext/spl/tests/GH-22047.phpt
index 1c53cbcc79f5..b01fbfd633c0 100644
--- a/ext/spl/tests/GH-22047.phpt
+++ b/ext/spl/tests/GH-22047.phpt
@@ -1,5 +1,7 @@
 --TEST--
 GH-22047: ArrayObject invalid iterator class in serialized payload
+--CREDITS--
+Igor Sak-Sakovskiy (Positive Technologies)
 --FILE--
 <?php