diff --git a/libc/include/wchar.h b/libc/include/wchar.h
index 1898c7e..e0e5c82 100644
--- a/libc/include/wchar.h
+++ b/libc/include/wchar.h
@@ -151,8 +151,8 @@
 extern int               wprintf(const wchar_t *, ...);
 extern int               wscanf(const wchar_t *, ...);
 
-extern long long          wcstoll_l(const wchar_t *, wchar_t **, size_t, locale_t);
-extern unsigned long long wcstoull_l(const wchar_t *, wchar_t **, size_t, locale_t);
+extern long long          wcstoll_l(const wchar_t *, wchar_t **, int, locale_t);
+extern unsigned long long wcstoull_l(const wchar_t *, wchar_t **, int, locale_t);
 extern long double        wcstold_l(const wchar_t *, wchar_t **, locale_t );
 
 extern int    wcscoll_l(const wchar_t *, const wchar_t *, locale_t);