diff --git a/src/os/win32/ngx_socket.h b/src/os/win32/ngx_socket.h
index 95e427c..98e1520 100644
--- a/src/os/win32/ngx_socket.h
+++ b/src/os/win32/ngx_socket.h
@@ -5,6 +5,8 @@
 #include <ngx_config.h>
 #include <ngx_log.h>
 
+#define NGX_WRITE_SHUTDOWN SD_SEND
+
 #define INET_ADDRSTRLEN     16
 
 typedef SOCKET  ngx_socket_t;
@@ -19,6 +21,9 @@
 int ngx_nonblocking(ngx_socket_t s);
 #define ngx_nonblocking_n   "ioctlsocket(FIONBIO)"
 
+#define ngx_shutdown_socket    shutdown
+#define ngx_shutdown_socket_n  "shutdown()"
+
 #define ngx_close_socket    closesocket
 #define ngx_close_socket_n  "closesocket()"