diff --git a/drivers/mtd/nand/nand_imx.c b/drivers/mtd/nand/nand_imx.c
index ca6e55bd8..661b19017 100644
--- a/drivers/mtd/nand/nand_imx.c
+++ b/drivers/mtd/nand/nand_imx.c
@@ -578,9 +578,9 @@ static void imx_nand_read_buf(struct mtd_info *mtd, u_char * buf, int len)
 
 	n = min(n, len);
 
-	memcpy(buf, host->data_buf + col, len);
+	memcpy(buf, host->data_buf + col, n);
 
-	host->buf_start += len;
+	host->buf_start += n;
 }
 
 /*