diff --git a/sound/soc/sof/sof-client-ipc-msg-injector.c b/sound/soc/sof/sof-client-ipc-msg-injector.c
index bce103da4c49dd8c9c55bdbe067d767ff239b1b8..dba6cfd7db092710a4ba8fbf4926fd68ed7a8ce7 100644
--- a/sound/soc/sof/sof-client-ipc-msg-injector.c
+++ b/sound/soc/sof/sof-client-ipc-msg-injector.c
@@ -137,7 +137,7 @@ static int sof_msg_inject_probe(struct auxiliary_device *auxdev,
 		return -ENOMEM;
 
 	priv->tx_buffer = devm_kmalloc(dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
-	priv->rx_buffer = devm_kmalloc(dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
+	priv->rx_buffer = devm_kzalloc(dev, SOF_IPC_MSG_MAX_SIZE, GFP_KERNEL);
 	if (!priv->tx_buffer || !priv->rx_buffer)
 		return -ENOMEM;