diff --git a/src/libCom/osi/os/WIN32/osdSock.h b/src/libCom/osi/os/WIN32/osdSock.h
index 381cd8eac..e685f6564 100644
--- a/src/libCom/osi/os/WIN32/osdSock.h
+++ b/src/libCom/osi/os/WIN32/osdSock.h
@@ -21,7 +21,7 @@
 #   define WIN32
 #endif
 #include <winsock2.h>
-
+#include <ws2tcpip.h>
 
 #define SOCKERRNO WSAGetLastError()