diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index f028277fb1cedb86ac4837e78341705c82f60b1b..2e183425facd855860e0f4d6d182954f6a9850e1 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -2459,7 +2459,7 @@ static int spi_nor_init_params(struct spi_nor *nor,
 	memset(params, 0, sizeof(*params));
 
 	/* Set SPI NOR sizes. */
-	params->size = info->sector_size * info->n_sectors;
+	params->size = (u64)info->sector_size * info->n_sectors;
 	params->page_size = info->page_size;
 
 	/* (Fast) Read settings. */