diff --git a/arch/arm/src/stm32h7/stm32_spi.c b/arch/arm/src/stm32h7/stm32_spi.c
index 5693fefc48c..881db437a91 100644
--- a/arch/arm/src/stm32h7/stm32_spi.c
+++ b/arch/arm/src/stm32h7/stm32_spi.c
@@ -1814,7 +1814,6 @@ static void spi_exchange(FAR struct spi_dev_s *dev, FAR const void *txbuffer,
 {
   FAR struct stm32_spidev_s *priv = (FAR struct stm32_spidev_s *)dev;
   FAR void * xbuffer = rxbuffer;
-  int ret;
 
   DEBUGASSERT(priv != NULL);