diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index b401fceb8..4b5071916 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -1389,7 +1389,8 @@
     <warn severity="style" reason="Obsolete" alternatives="RtlFillMemory"/>
   </function>
   <!-- int _iswctype( wint_t wc, wctype_t desc ); -->
-  <function name="_iswctype">
+  <!-- int is_wctype( wint_t wc, wctype_t desc ); -->
+  <function name="_iswctype,is_wctype">
     <use-retval/>
     <pure/>
     <returnValue type="int"/>