diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index d6c5a5616..ef96ef88f 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -6402,6 +6402,15 @@
       <not-bool/>
     </arg>
   </function>
+  <!-- virtual void wxSlider::SetLineSize (int n) -->
+  <function name="wxSlider::SetLineSize">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <not-bool/>
+    </arg>
+  </function>
   <!-- http://docs.wxwidgets.org/trunk/classwx_text_file.html -->
   <!-- wxTextFileType GuessType () const -->
   <function name="wxTextFile::GuessType">