diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index 3738b1920c09..612c3050d514 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -184,7 +184,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
 	long i;
 	int ret;
 
-	if (rs->rs_bound_addr == 0) {
+	if (rs->rs_bound_addr == 0 || !rs->rs_transport) {
 		ret = -ENOTCONN; /* XXX not a great errno */
 		goto out;
 	}