diff --git a/CMakeLists.txt b/CMakeLists.txt
index f904b49..40017c5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -118,12 +118,13 @@
 include(CheckFunctionExists)
 include(CheckTypeSize)
 if(WIN32)
-  set(CMAKE_EXTRA_INCLUDE_FILES winsock2.h)
+  set(CMAKE_EXTRA_INCLUDE_FILES winsock2.h ws2tcpip.h)
   set(CMAKE_REQUIRED_LIBRARIES ws2_32)
+else()
+  set(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
 endif()
 check_function_exists(inet_aton HAVE_INET_ATON)
 check_function_exists(inet_ntop HAVE_INET_NTOP)
-set(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
 check_type_size(socklen_t SOCKLEN_T)
 
 set(CMAKE_EXTRA_INCLUDE_FILES) 
diff --git a/common/network/TcpSocket.cxx b/common/network/TcpSocket.cxx
index 04e0895..7e11588 100644
--- a/common/network/TcpSocket.cxx
+++ b/common/network/TcpSocket.cxx
@@ -23,6 +23,7 @@
 #ifdef WIN32
 //#include <io.h>
 #include <winsock2.h>
+#include <ws2tcpip.h>
 #define errorNumber WSAGetLastError()
 #else
 #define errorNumber errno
diff --git a/common/os/net.c b/common/os/net.c
index 5c0ac2d..7bad36c 100644
--- a/common/os/net.c
+++ b/common/os/net.c
@@ -25,6 +25,7 @@
 
 #ifdef WIN32
 #include <winsock2.h>
+#include <ws2tcpip.h>
 #else
 #include <sys/socket.h>
 #include <netinet/in.h>