diff --git a/resources/functionMap.php b/resources/functionMap.php
index ed1a7bb993..d31be66a67 100644
--- a/resources/functionMap.php
+++ b/resources/functionMap.php
@@ -1973,24 +1973,24 @@
 'DOMNamedNodeMap::getNamedItemNS' => ['?DOMNode', 'namespaceuri'=>'string', 'localname'=>'string'],
 'DOMNamedNodeMap::item' => ['?DOMNode', 'index'=>'int'],
 'DomNode::add_namespace' => ['bool', 'uri'=>'string', 'prefix'=>'string'],
-'DomNode::append_child' => ['DOMNode', 'newnode'=>'DOMNode'],
-'DOMNode::appendChild' => ['DOMNode', 'newnode'=>'DOMNode'],
+'DomNode::append_child' => ['__benevolent<DOMNode|false>', 'newnode'=>'DOMNode'],
+'DOMNode::appendChild' => ['__benevolent<DOMNode|false>', 'newnode'=>'DOMNode'],
 'DOMNode::C14N' => ['string', 'exclusive='=>'bool', 'with_comments='=>'bool', 'xpath='=>'array', 'ns_prefixes='=>'array'],
 'DOMNode::C14NFile' => ['int', 'uri='=>'string', 'exclusive='=>'bool', 'with_comments='=>'bool', 'xpath='=>'array', 'ns_prefixes='=>'array'],
-'DOMNode::cloneNode' => ['DOMNode', 'deep='=>'bool'],
+'DOMNode::cloneNode' => ['__benevolent<DOMNode|false>', 'deep='=>'bool'],
 'DOMNode::getLineNo' => ['int'],
 'DOMNode::getNodePath' => ['?string'],
 'DOMNode::hasAttributes' => ['bool'],
 'DOMNode::hasChildNodes' => ['bool'],
-'DOMNode::insertBefore' => ['DOMNode', 'newnode'=>'DOMNode', 'refnode='=>'DOMNode'],
+'DOMNode::insertBefore' => ['__benevolent<DOMNode|false>', 'newnode'=>'DOMNode', 'refnode='=>'DOMNode'],
 'DOMNode::isDefaultNamespace' => ['bool', 'namespaceuri'=>'string'],
 'DOMNode::isSameNode' => ['bool', 'node'=>'DOMNode'],
 'DOMNode::isSupported' => ['bool', 'feature'=>'string', 'version'=>'string'],
 'DOMNode::lookupNamespaceURI' => ['?string', 'prefix'=>'?string'],
 'DOMNode::lookupPrefix' => ['string', 'namespaceuri'=>'string'],
 'DOMNode::normalize' => ['void'],
-'DOMNode::removeChild' => ['DOMNode', 'oldnode'=>'DOMNode'],
-'DOMNode::replaceChild' => ['DOMNode', 'newnode'=>'DOMNode', 'oldnode'=>'DOMNode'],
+'DOMNode::removeChild' => ['__benevolent<DOMNode|false>', 'oldnode'=>'DOMNode'],
+'DOMNode::replaceChild' => ['__benevolent<DOMNode|false>', 'newnode'=>'DOMNode', 'oldnode'=>'DOMNode'],
 'DOMNodeList::count' => ['0|positive-int'],
 'DOMNodeList::item' => ['?DOMNode', 'index'=>'int'],
 'DOMProcessingInstruction::__construct' => ['void', 'name'=>'string', 'value'=>'string'],