diff --git a/third_party/libxml/src/libxml.h b/third_party/libxml/src/libxml.h
index 1656ac2..f8a368c 100644
--- a/third_party/libxml/src/libxml.h
+++ b/third_party/libxml/src/libxml.h
@@ -17,6 +17,9 @@
 #define _FILE_OFFSET_BITS 64
 #endif
 #endif
+#ifndef _CRT_NO_POSIX_ERROR_CODES
+#define _CRT_NO_POSIX_ERROR_CODES
+#endif
 
 #if defined(macintosh)
 #include "config-mac.h"