diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index a1ac7a555..91b914fba 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -8758,6 +8758,22 @@
     <arg nr="1" direction="in"/>
     <arg nr="2" direction="in" default="wxEmptyString"/>
   </function>
+  <!-- virtual void wxXmlNode::AddAttribute( const wxString & name, const wxString & value ) -->
+  <function name="wxXmlNode::AddAttribute">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <arg nr="1" direction="in"/>
+    <arg nr="2" direction="in"/>
+  </function>
+  <!-- virtual void wxXmlNode::AddAttribute(wxXmlAttribute * attr ) -->
+  <!-- virtual void wxXmlNode::AddChild(wxXmlNode * child) -->
+  <function name="wxXmlNode::AddAttribute,wxXmlNode::AddChild">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <arg nr="1" direction="in">
+      <not-null/>
+    </arg>
+  </function>
   <!-- wxXmlAttribute * wxXmlNode::GetAttributes( void ) const -->
   <function name="wxXmlNode::GetAttributes">
     <noreturn>false</noreturn>