diff --git a/NEWS b/NEWS
index 0472345f2ab..d5cd09f0639 100644
--- a/NEWS
+++ b/NEWS
@@ -32,6 +32,7 @@ PHP                                                                        NEWS
     (nielsdos)
   . Fixed bug GH-16336 (Attribute intern document mismanagement). (nielsdos)
   . Fixed bug GH-16338 (Null-dereference in ext/dom/node.c). (nielsdos)
+  . Fixed bug GH-16473 (dom_import_simplexml stub is wrong). (nielsdos)
 
 - EXIF:
   . Fixed bug GH-16409 (Segfault in exif_thumbnail when not dealing with a
diff --git a/ext/dom/php_dom.stub.php b/ext/dom/php_dom.stub.php
index 0f7f7484104..f46550a012c 100644
--- a/ext/dom/php_dom.stub.php
+++ b/ext/dom/php_dom.stub.php
@@ -1234,7 +1234,7 @@ namespace
     }
 #endif
 
-    function dom_import_simplexml(object $node): DOMElement {}
+    function dom_import_simplexml(object $node): DOMAttr|DOMElement {}
 }
 
 namespace Dom
@@ -2168,5 +2168,5 @@ namespace Dom
     }
 #endif
 
-    function import_simplexml(object $node): Element {}
+    function import_simplexml(object $node): Attr|Element {}
 }
diff --git a/ext/dom/php_dom_arginfo.h b/ext/dom/php_dom_arginfo.h
index e1f230ccbcf..1481c39bc1e 100644
--- a/ext/dom/php_dom_arginfo.h
+++ b/ext/dom/php_dom_arginfo.h
@@ -1,11 +1,11 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: b79ad2b70757f7d65a6b4fd907222a4955264bf6 */
+ * Stub hash: 55ab8f866af63bd2edf96839d35bc8aba88e37ca */
 
-ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_dom_import_simplexml, 0, 1, DOMElement, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_OBJ_TYPE_MASK_EX(arginfo_dom_import_simplexml, 0, 1, DOMAttr|DOMElement, 0)
 	ZEND_ARG_TYPE_INFO(0, node, IS_OBJECT, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_Dom_import_simplexml, 0, 1, Dom\\Element, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_OBJ_TYPE_MASK_EX(arginfo_Dom_import_simplexml, 0, 1, Dom\\Attr|Dom\\Element, 0)
 	ZEND_ARG_TYPE_INFO(0, node, IS_OBJECT, 0)
 ZEND_END_ARG_INFO()
 
diff --git a/ext/dom/tests/gh16473.phpt b/ext/dom/tests/gh16473.phpt
new file mode 100644
index 00000000000..f4f7308ca90
--- /dev/null
+++ b/ext/dom/tests/gh16473.phpt
@@ -0,0 +1,13 @@
+--TEST--
+GH-16473 (dom_import_simplexml stub is wrong)
+--EXTENSIONS--
+dom
+simplexml
+--FILE--
+<?php
+$root = simplexml_load_string('<root xmlns:x="urn:x" x:attr="foo"/>');
+$attr = $root->attributes('urn:x');
+var_dump(dom_import_simplexml($attr)->textContent);
+?>
+--EXPECT--
+string(3) "foo"