diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 852883b..73fd403 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -901,7 +901,7 @@
 			return -EINVAL;
 		}
 
-		if (nand->ecc.bytes > mtd->oobsize - 2) {
+		if (nand->ecc.bytes > mtd->oobsize - PMECC_OOB_RESERVED_BYTES) {
 			dev_err(host->dev, "No room for ECC bytes\n");
 			return -EINVAL;
 		}