diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 556d65af5e23..06dd1be54925 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1007,6 +1007,8 @@ void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev,
 	if (sgt->orig_nents) {
 		dma_unmap_sg(dev, sgt->sgl, sgt->orig_nents, dir);
 		sg_free_table(sgt);
+		sgt->orig_nents = 0;
+		sgt->nents = 0;
 	}
 }