diff --git a/src/windows.hpp b/src/windows.hpp
index 3f38f491..3ced6adf 100644
--- a/src/windows.hpp
+++ b/src/windows.hpp
@@ -37,9 +37,9 @@
 #define NOMINMAX          // Macros min(a,b) and max(a,b)
 #endif
 
-//  Set target version to Windows Server 2008, Windows Vista or higher.
+//  Set target version to Windows Server 2003, Windows XP/SP1 or higher.
 #ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600
+#define _WIN32_WINNT 0x0501
 #endif
 
 #ifdef __MINGW32__
@@ -54,7 +54,6 @@
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
-#include <iphlpapi.h>
 
 #if !defined __MINGW32__
 #include <Mstcpip.h>