diff --git a/modules/sockets/sockets.cpp b/modules/sockets/sockets.cpp
index 7b3ed87791..16b26b0dc6 100644
--- a/modules/sockets/sockets.cpp
+++ b/modules/sockets/sockets.cpp
@@ -15,8 +15,8 @@
 #include <amtl/am-string.h>
 
 #ifdef _WIN32
-	#include <winsock2.h>
-	#include <ws2tcpip.h>
+	#include <WinSock2.h>
+	#include <WS2tcpip.h>
 
 	#undef errno
 	#undef close
@@ -24,6 +24,9 @@
 	#define errno WSAGetLastError()
 	#define close(sockfd) closesocket(sockfd)
 
+	#undef EINPROGRESS
+	#undef EWOULDBLOCK
+
 	#define EINPROGRESS WSAEINPROGRESS
 	#define EWOULDBLOCK WSAEWOULDBLOCK
 #else