1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c
index 31f505cc942a..266de04b6d29 100644
--- a/drivers/mtd/tests/mtd_readtest.c
+++ b/drivers/mtd/tests/mtd_readtest.c
@@ -51,7 +51,7 @@ static int read_eraseblock_by_page(int ebnum)
         void *oobbuf = iobuf1;
 
         for (i = 0; i < pgcnt; i++) {
-                memset(buf, 0 , pgcnt);
+                memset(buf, 0 , pgsize);
                 ret = mtd_read(mtd, addr, pgsize, &read, buf);
                 if (ret == -EUCLEAN)
                         ret = 0;