--- a/Makefile	Mon Oct 09 10:14:37 2017 +0300
+++ b/Makefile	Mon Oct 09 10:49:36 2017 +0300
@@ -30,7 +30,7 @@
 
 RST2HTML := rst2html
 ifeq '$(host_os)' 'cygwin'
-  RST2HTML := rst2html.py
+  RST2HTML := LC_ALL=en_US.utf8 rst2html.py
 endif
 
 RST_WARNING_FLAGS := --halt warning