diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index a126fca6f5aafb..a925e1267d7466 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -54,7 +54,6 @@ WIN32 is still required for the locale module.
 #define HAVE_TMPFILE
 #define HAVE_TMPNAM
 #define HAVE_CLOCK
-#define HAVE_STRERROR
 
 #include <io.h>