diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c
index 6ee7719e59037ef57916a53677a772501a68ab93..b3d44bd19a2bfc6f6ba9eb655febb3d05259679b 100644
--- a/drivers/mtd/spi-nor/sfdp.c
+++ b/drivers/mtd/spi-nor/sfdp.c
@@ -788,7 +788,7 @@ spi_nor_region_check_overlay(struct spi_nor_erase_region *region,
 	int i;
 
 	for (i = 0; i < SNOR_ERASE_TYPE_MAX; i++) {
-		if (!(erase_type & BIT(i)))
+		if (!(erase[i].size && erase_type & BIT(erase[i].idx)))
 			continue;
 		if (region->size & erase[i].size_mask) {
 			spi_nor_region_mark_overlay(region);