diff --git a/src/windows.hpp b/src/windows.hpp
index 780c4e1c..58d3b5c9 100644
--- a/src/windows.hpp
+++ b/src/windows.hpp
@@ -50,10 +50,11 @@
 #define _WIN32_WINNT 0x0501
 #endif
 #endif
- 
+
 #include <winsock2.h>
 #include <windows.h>
 #include <mswsock.h>
+#include <iphlpapi.h>
 
 #if !defined __MINGW32__
 #include <Mstcpip.h>