diff --git a/linux_mtd.c b/linux_mtd.c
index b8aee0616..495db9a74 100644
--- a/linux_mtd.c
+++ b/linux_mtd.c
@@ -179,7 +179,7 @@ static int linux_mtd_probe(struct flashctx *flash)
 
 	if (data->no_erase)
 		flash->chip->feature_bits |= FEATURE_NO_ERASE;
-	flash->chip->tested = TEST_OK_PREW;
+	flash->chip->tested = TEST_OK_PREWB;
 	flash->chip->total_size = data->total_size / 1024;	/* bytes -> kB */
 	flash->chip->block_erasers[0].eraseblocks[0].size = data->erasesize;
 	flash->chip->block_erasers[0].eraseblocks[0].count =