diff --git a/src/include/pg_config.h.win32 b/src/include/pg_config.h.win32
index d476b2035d..1d3c0cb185 100644
--- a/src/include/pg_config.h.win32
+++ b/src/include/pg_config.h.win32
@@ -6,8 +6,6 @@
 #define PG_VERSION "7.5"
 #define PG_VERSION_STR "7.5devel (win32)"
 
-#define SYSCONFDIR ""
-
 #define DEF_PGPORT 5432
 #define DEF_PGPORT_STR "5432"