diff --git a/test/test-auto-drop-on-close.c b/test/test-auto-drop-on-close.c
index 02d8cf7..7b3cbb2 100644
--- a/test/test-auto-drop-on-close.c
+++ b/test/test-auto-drop-on-close.c
@@ -17,8 +17,6 @@
 #include "wepoll.h"
 #include "win.h"
 
-#include <WS2tcpip.h>
-
 static SOCKET create_and_add_socket(HANDLE ephnd, int events) {
   SOCKET sock;
   struct epoll_event ev;
diff --git a/test/test-ctl-fuzz.c b/test/test-ctl-fuzz.c
index 3382e32..3ba25ed 100644
--- a/test/test-ctl-fuzz.c
+++ b/test/test-ctl-fuzz.c
@@ -9,8 +9,6 @@
 #include "wepoll.h"
 #include "win.h"
 
-#include <WS2tcpip.h>
-
 #define NUM_SOCKETS 10000
 #define RUN_TIME 5000
 #define PRINT_INTERVAL 500
diff --git a/test/test-multi-poll.c b/test/test-multi-poll.c
index 87e7890..cd68472 100644
--- a/test/test-multi-poll.c
+++ b/test/test-multi-poll.c
@@ -9,8 +9,6 @@
 #include "wepoll.h"
 #include "win.h"
 
-#include <WS2tcpip.h>
-
 #define PORT_COUNT 10
 #define THREADS_PER_PORT 10
 
diff --git a/test/test-oneshot-and-hangup.c b/test/test-oneshot-and-hangup.c
index 66384fb..725c080 100644
--- a/test/test-oneshot-and-hangup.c
+++ b/test/test-oneshot-and-hangup.c
@@ -6,8 +6,6 @@
 #include "wepoll.h"
 #include "win.h"
 
-#include <WS2tcpip.h>
-
 int tcp_socketpair(SOCKET socks[2]) {
   SOCKET listen_sock;
   struct sockaddr_in addr;