diff --git a/drivers/mtd/spi/sf-uclass.c b/drivers/mtd/spi/sf-uclass.c
index ed629f1..3017022 100644
--- a/drivers/mtd/spi/sf-uclass.c
+++ b/drivers/mtd/spi/sf-uclass.c
@@ -100,5 +100,5 @@
 	.id		= UCLASS_SPI_FLASH,
 	.name		= "spi_flash",
 	.post_bind	= spi_flash_post_bind,
-	.per_device_auto	= sizeof(struct spi_flash),
+	.per_device_auto	= sizeof(struct spi_nor),
 };