diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index 664be2c21..0c675996f 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -251,6 +251,7 @@
   <define name="wxCHECK2(condition, operation)" value=""/>
   <define name="wxCHECK(condition, retValue)" value=""/>
   <define name="wxFAIL_MSG(message)" value=""/>
+  <define name="wxUnusedVar(var)" value=""/>
   <define name="wxCOMPILE_TIME_ASSERT(condition, retValue)" value="assert(condition)"/>
   <define name="wxCHECK_MSG(condition, retValue, msg)" value=""/>
   <define name="wxCHECK_RET(condition, retValue, msg)" value=""/>
@@ -6849,11 +6850,9 @@
     <returnValue type="void"/>
     <const/>
     <arg nr="1">
-      <not-uninit/>
       <not-null/>
     </arg>
     <arg nr="2">
-      <not-uninit/>
       <not-null/>
     </arg>
   </function>
@@ -7212,6 +7211,16 @@
       <not-null/>
     </arg>
   </function>
+  <!-- wxToolBarToolBase* wxToolBar::AddTool(int toolId, const wxString & label, const wxBitmap & bitmap, const wxString & shortHelp = wxEmptyString, wxItemKind kind = wxITEM_NORMAL) -->
+  <function name="wxToolBar::AddTool">
+    <noreturn>false</noreturn>
+    <returnValue type="wxToolBarToolBase*"/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="4" default="wxEmptyString"/>
+    <arg nr="5" default="wxITEM_NORMAL"/>
+  </function>
   <!-- wxString wxString::SubString( size_t from, size_t to ) const -->
   <function name="wxString::SubString">
     <noreturn>false</noreturn>