diff --git a/drivers/spi/stm32_spi.c b/drivers/spi/stm32_spi.c
index a1f31cf653c7..adba97915cd3 100644
--- a/drivers/spi/stm32_spi.c
+++ b/drivers/spi/stm32_spi.c
@@ -404,8 +404,8 @@ static int stm32_spi_xfer(struct udevice *slave, unsigned int bitlen,
 
 	priv->tx_buf = dout;
 	priv->rx_buf = din;
-	priv->tx_len = priv->tx_buf ? bitlen / 8 : 0;
-	priv->rx_len = priv->rx_buf ? bitlen / 8 : 0;
+	priv->tx_len = priv->tx_buf ? xferlen : 0;
+	priv->rx_len = priv->rx_buf ? xferlen : 0;
 
 	mode = SPI_FULL_DUPLEX;
 	if (!priv->tx_buf)