diff --git a/acinclude.m4 b/acinclude.m4
index 5563414b5..6cbc3c4e8 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -141,6 +141,9 @@ AC_DEFUN([TYPE_SOCKADDR_STORAGE],
 #endif
 #ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
 #endif
    ])