diff -Naur Python-3.7.0-orig/Include/osdefs.h Python-3.7.0/Include/osdefs.h
--- Python-3.7.0-orig/Include/osdefs.h	2018-06-27 06:07:35.000000000 +0300
+++ Python-3.7.0/Include/osdefs.h	2018-07-12 10:22:17.422852100 +0300
@@ -10,7 +10,6 @@
 #ifdef MS_WINDOWS
 #define SEP L'\\'
 #define ALTSEP L'/'
-#define MAXPATHLEN 256
 #define DELIM L';'
 #endif