diff --git a/tests/testutil.hpp b/tests/testutil.hpp
index c6f5e4de..6a1c8bb8 100644
--- a/tests/testutil.hpp
+++ b/tests/testutil.hpp
@@ -102,7 +102,6 @@ const uint8_t zmtp_ready_sub[27] = {
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #include <stdexcept>
-#define close closesocket
 typedef int socket_size_t;
 inline const char *as_setsockopt_opt_t (const void *opt)
 {