diff --git a/sound/soc/intel/baytrail/sst-baytrail-ipc.c b/sound/soc/intel/baytrail/sst-baytrail-ipc.c
index 799b804f3e347b70f43d0de977f7bd7603e41e6c..773a47552bdf2a66ab458698923d2825a10a5a03 100644
--- a/sound/soc/intel/baytrail/sst-baytrail-ipc.c
+++ b/sound/soc/intel/baytrail/sst-baytrail-ipc.c
@@ -708,6 +708,8 @@ int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)
 	ipc->ops.tx_data_copy = byt_tx_data_copy;
 	ipc->ops.reply_msg_match = byt_reply_msg_match;
 	ipc->ops.is_dsp_busy = byt_is_dsp_busy;
+	ipc->tx_data_max_size = IPC_MAX_MAILBOX_BYTES;
+	ipc->rx_data_max_size = IPC_MAX_MAILBOX_BYTES;
 
 	err = sst_ipc_init(ipc);
 	if (err != 0)