diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index e7a475c6e..7acaee376 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -203,7 +203,6 @@
     <leak-ignore/>
     <returnValue type="bool"><![CDATA[arg1==10 || arg1==16]]></returnValue>
     <arg nr="1">
-      <formatstr/>
       <valid>10,16</valid>
       <not-uninit/>
       <not-bool/>