diff --git a/nbd.c b/nbd.c
index 9bebe4a9bb..ee5427cab4 100644
--- a/nbd.c
+++ b/nbd.c
@@ -264,7 +264,7 @@ error:
                   Request (type == 2)
 */
 
-int nbd_negotiate(BlockDriverState *bs, int csock, off_t size)
+int nbd_negotiate(int csock, off_t size)
 {
 	char buf[8 + 8 + 8 + 128];
 
diff --git a/nbd.h b/nbd.h
index 55ba1ba01e..ede1e746cb 100644
--- a/nbd.h
+++ b/nbd.h
@@ -50,7 +50,7 @@ int tcp_socket_incoming(const char *address, uint16_t port);
 int unix_socket_outgoing(const char *path);
 int unix_socket_incoming(const char *path);
 
-int nbd_negotiate(BlockDriverState *bs, int csock, off_t size);
+int nbd_negotiate(int csock, off_t size);
 int nbd_receive_negotiate(int csock, off_t *size, size_t *blocksize);
 int nbd_init(int fd, int csock, off_t size, size_t blocksize);
 int nbd_send_request(int csock, struct nbd_request *request);
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 916150e424..d5d5db73a0 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -458,7 +458,7 @@ int main(int argc, char **argv)
                                              (struct sockaddr *)&addr,
                                              &addr_len);
                 if (sharing_fds[nb_fds] != -1 &&
-                    nbd_negotiate(bs, sharing_fds[nb_fds], fd_size) != -1) {
+                    nbd_negotiate(sharing_fds[nb_fds], fd_size) != -1) {
                         if (sharing_fds[nb_fds] > max_fd)
                             max_fd = sharing_fds[nb_fds];
                         nb_fds++;