diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index 34d21bbb7..b43f9a0de 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -13459,6 +13459,23 @@ wxItemKind kind = wxITEM_NORMAL) -->
       <not-uninit/>
     </arg>
   </function>
+  <!-- void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b ) -->
+  <function name="wxImage::SetMaskColour">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <valid>0:255</valid>
+    </arg>
+    <arg nr="2" direction="in">
+      <not-uninit/>
+      <valid>0:255</valid>
+    </arg>
+    <arg nr="3" direction="in">
+      <not-uninit/>
+      <valid>0:255</valid>
+    </arg>
+  </function>
   <!-- void wxListItem::SetColumn(int col) -->
   <!-- void wxListItem::SetId(long id) -->
   <!-- void wxListItem::SetImage(int image) -->