diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index ecaf3becee40..f934551a9b1c 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -469,7 +469,7 @@ static size_t rxrpc_prepare_data_subpacket(struct rxrpc_call *call,
 		why = rxrpc_reqack_ack_lost;
 	else if (txb->flags & RXRPC_TXBUF_RESENT)
 		why = rxrpc_reqack_retrans;
-	else if (call->cong_ca_state == RXRPC_CA_SLOW_START && call->cong_cwnd <= 2)
+	else if (call->cong_ca_state == RXRPC_CA_SLOW_START && call->cong_cwnd <= RXRPC_MIN_CWND)
 		why = rxrpc_reqack_slow_start;
 	else if (call->tx_winsize <= 2)
 		why = rxrpc_reqack_small_txwin;