diff --git a/blockdev-nbd.c b/blockdev-nbd.c
index 18dc528761..b3a24740b2 100644
--- a/blockdev-nbd.c
+++ b/blockdev-nbd.c
@@ -28,6 +28,7 @@ static void nbd_accept(void *opaque)
 
     int fd = accept(server_fd, (struct sockaddr *)&addr, &addr_len);
     if (fd >= 0 && !nbd_client_new(NULL, fd, nbd_client_put)) {
+        shutdown(fd, 2);
         close(fd);
     }
 }
diff --git a/qemu-nbd.c b/qemu-nbd.c
index ba6043680a..626e5844f9 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -372,6 +372,7 @@ static void nbd_accept(void *opaque)
     if (nbd_client_new(exp, fd, nbd_client_closed)) {
         nb_fds++;
     } else {
+        shutdown(fd, 2);
         close(fd);
     }
 }