diff --git a/src/fcxml.c b/src/fcxml.c
index 9dc64e2..7b7bbfd 100644
--- a/src/fcxml.c
+++ b/src/fcxml.c
@@ -53,6 +53,7 @@
 #endif /* ENABLE_LIBXML2 */
 
 #ifdef _WIN32
+#define _WIN32_WINNT 0x0500
 #define STRICT
 #include <windows.h>
 #undef STRICT