diff --git a/lib/config-win32.h b/lib/config-win32.h
index 9ce6ad298..59ba4e538 100644
--- a/lib/config-win32.h
+++ b/lib/config-win32.h
@@ -390,21 +390,6 @@
 #  define SIZEOF_SIZE_T 4
 #endif
 
-/* ---------------------------------------------------------------- */
-/*                          STRUCT RELATED                          */
-/* ---------------------------------------------------------------- */
-
-/* Define if you have struct sockaddr_storage. */
-#if !defined(__SALFORDC__) && !defined(__BORLANDC__)
-#define HAVE_STRUCT_SOCKADDR_STORAGE 1
-#endif
-
-/* Define if you have struct timeval. */
-#define HAVE_STRUCT_TIMEVAL 1
-
-/* Define if struct sockaddr_in6 has the sin6_scope_id member. */
-#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
-
 /* ---------------------------------------------------------------- */
 /*               BSD-style lwIP TCP/IP stack SPECIFIC               */
 /* ---------------------------------------------------------------- */
@@ -572,6 +557,25 @@
 #  endif
 #endif
 
+/* ---------------------------------------------------------------- */
+/*                          STRUCT RELATED                          */
+/* ---------------------------------------------------------------- */
+
+/* Define if you have struct sockaddr_storage. */
+#if !defined(__SALFORDC__) && !defined(__BORLANDC__)
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+#endif
+
+/* Define if you have struct timeval. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define if struct sockaddr_in6 has the sin6_scope_id member. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+#if HAVE_WINSOCK2_H && defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0600)
+#define HAVE_STRUCT_POLLFD 1
+#endif
+
 /* ---------------------------------------------------------------- */
 /*                        LARGE FILE SUPPORT                        */
 /* ---------------------------------------------------------------- */