diff --git a/oslib-win32.c b/oslib-win32.c
index 51b33e8b2017bd1f5db2105b590cc8e1058022b5..9ca83df0119113a697c2be741c8af37d243cd184 100644
--- a/oslib-win32.c
+++ b/oslib-win32.c
@@ -150,3 +150,8 @@ int qemu_get_thread_id(void)
 {
     return GetCurrentThreadId();
 }
+
+static void default_qemu_fd_register(int fd)
+{
+}
+QEMU_WEAK_ALIAS(qemu_fd_register, default_qemu_fd_register);