Hi Daniel, On 02/14/18 05:45, Daniel Lehman wrote: > #define _isalnum WINE_tchar_routine(isalnum, _ismbcalnum, iswalnum) > +#define _istalnum WINE_tchar_routine(isalnum, _ismbcalnum, iswalnum) It looks like "t" was missing in old define. Thanks, Piotr