diff --git a/ext/dom/entityreference.c b/ext/dom/entityreference.c
index 53ec62548ac..4b2686d3823 100644
--- a/ext/dom/entityreference.c
+++ b/ext/dom/entityreference.c
@@ -73,7 +73,7 @@ PHP_METHOD(domentityreference, __construct)
 
 	intern = (dom_object *)zend_object_store_get_object(id TSRMLS_CC);
 	if (intern != NULL) {
-		oldnode = (xmlNodePtr)intern->ptr;
+		oldnode = dom_object_get_node(intern);
 		if (oldnode != NULL) {
 			php_libxml_node_free_resource(oldnode  TSRMLS_CC);
 		}