diff --git a/drivers/bluetooth/btintel_pcie.c b/drivers/bluetooth/btintel_pcie.c
index f333b01f7465..d525269be501 100644
--- a/drivers/bluetooth/btintel_pcie.c
+++ b/drivers/bluetooth/btintel_pcie.c
@@ -401,7 +401,7 @@ static int btintel_pcie_send_sync(struct btintel_pcie_data *data,
 
 	tfd_index = data->ia.tr_hia[BTINTEL_PCIE_TXQ_NUM];
 
-	if (tfd_index > txq->count)
+	if (tfd_index >= txq->count)
 		return -ERANGE;
 
 	if (skb->len > BTINTEL_PCIE_BUFFER_SIZE - BTINTEL_PCIE_HCI_TYPE_LEN) {