diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 56a8b20..fd659f8 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -2424,7 +2424,7 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd,
                len -= block_size;
                addr += block_size;

-               if (addr == region_end) {
+               if (region && addr == region_end) {
                        if (!len)
                                break;
                        region++;