diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index ffb4b124e..b1696893c 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -719,7 +719,7 @@
     </arg>
   </function>
   <!-- http://docs.wxwidgets.org/trunk/classwx_colour.html -->
-  <!-- virtual unsigned char 	Alpha () const -->
+  <!-- virtual unsigned char Alpha () const -->
   <function name="wxColour::Alpha">
     <noreturn>false</noreturn>
     <leak-ignore/>
@@ -727,6 +727,15 @@
     <use-retval/>
   </function>
   <!-- http://docs.wxwidgets.org/trunk/classwx_colour.html -->
+  <!-- static void wxColour::ChangeLightness(int ialpha) -->
+  <function name="wxColour::ChangeLightness">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- http://docs.wxwidgets.org/trunk/classwx_colour.html -->
   <!-- virtual unsigned char 	Blue () const -->
   <function name="wxColour::Blue">
     <noreturn>false</noreturn>