diff --git a/include/apr.hw b/include/apr.hw
index 4247d6135c..7cad6bbfb6 100644
--- a/include/apr.hw
+++ b/include/apr.hw
@@ -84,9 +84,9 @@
 #endif
 #ifndef _WIN32_WINNT
 
-/* Restrict the server to a subset of Windows XP header files by default
+/* Restrict the server to a subset of Windows Vista header files by default
  */
-#define _WIN32_WINNT 0x0501
+#define _WIN32_WINNT 0x0600
 #endif
 #ifndef NOUSER
 #define NOUSER