diff --git a/src/include/pg_config.h.win32 b/src/include/pg_config.h.win32
index e1aa7e8b23..29f1ef4850 100644
--- a/src/include/pg_config.h.win32
+++ b/src/include/pg_config.h.win32
@@ -178,9 +178,6 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #define HAVE_INTTYPES_H 1
 
-/* Define to 1 if you have the global variable 'int optreset'. */
-#define HAVE_INT_OPTRESET 1
-
 /* Define to 1 if you have the global variable 'int timezone'. */
 #define HAVE_INT_TIMEZONE