diff --git a/ext/dom/php_dom.stub.php b/ext/dom/php_dom.stub.php
index 0161c868a31..24c24ce019c 100644
--- a/ext/dom/php_dom.stub.php
+++ b/ext/dom/php_dom.stub.php
@@ -677,4 +677,4 @@ class DOMXPath
 }
 #endif
 
-function dom_import_simplexml(object $node): ?DOMElement {}
+function dom_import_simplexml(object $node): DOMElement {}
diff --git a/ext/dom/php_dom_arginfo.h b/ext/dom/php_dom_arginfo.h
index 39897902caf..90ad40f6d2e 100644
--- a/ext/dom/php_dom_arginfo.h
+++ b/ext/dom/php_dom_arginfo.h
@@ -1,7 +1,7 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 2931a77f1b3b92494ce05cf44c2175dfae5f777f */
+ * Stub hash: 1dc4b6f71305437dcf86435bc1f72cb05aafd17d */
 
-ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_dom_import_simplexml, 0, 1, DOMElement, 1)
+ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_dom_import_simplexml, 0, 1, DOMElement, 0)
 	ZEND_ARG_TYPE_INFO(0, node, IS_OBJECT, 0)
 ZEND_END_ARG_INFO()