diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 2c037e1746d3d3ded8accdef94f84b5ba9360fc2..5a7d368aa47a1e41a27fe6c3384c1e3680e551de 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -436,6 +436,8 @@ static int build_rdma_send(struct t4_sq *sq, union t4_wr *wqe,
 	default:
 		return -EINVAL;
 	}
+	wqe->send.r3 = 0;
+	wqe->send.r4 = 0;
 
 	plen = 0;
 	if (wr->num_sge) {