diff --git a/include/wx/cmdargs.h b/include/wx/cmdargs.h
index e3d74c031a..a120c45870 100644
--- a/include/wx/cmdargs.h
+++ b/include/wx/cmdargs.h
@@ -141,7 +141,7 @@ private:
 
 // provide global operator overload for compatibility with the existing code
 // doing things like "if ( condition && argv )"
-inline operator&&(bool cond, const wxCmdLineArgsArray& array)
+inline bool operator&&(bool cond, const wxCmdLineArgsArray& array)
 {
     return cond && !array.IsEmpty();
 }