diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 91742ba5f15..29db6fa3684 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -207,7 +207,7 @@ static int cadence_spi_xfer(struct udevice *dev, unsigned int bitlen,
 	} else {
 		data_bytes = bitlen / 8;
 	}
-	debug("%s: len=%d [bytes]\n", __func__, data_bytes);
+	debug("%s: len=%zu [bytes]\n", __func__, data_bytes);
 
 	/* Set Chip select */
 	cadence_qspi_apb_chipselect(base, spi_chip_select(dev),