diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index 42372afd1..b48fa5049 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -5139,6 +5139,17 @@
       <not-uninit/>
     </arg>
   </function>
+  <!-- void wxString::SetChar(size_t n, wxUniChar ch) -->
+  <function name="wxString::SetChar">
+    <returnValue type="size_t"/>
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <valid>0:</valid>
+    </arg>
+    <arg nr="2" direction="in"/>
+  </function>
   <!-- wxUniChar wxString::GetChar(size_t n) const -->
   <function name="wxString::GetChar">
     <returnValue type="wxUniChar"/>