diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 0ac49ca58524..8323ac991ad1 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2923,7 +2923,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
  *
  * Check if an ID string is repeated within a given sequence of bytes at
  * specific repetition interval period (e.g., {0x20,0x01,0x7F,0x20} has a
- * period of 2). This is a helper function for nand_id_len(). Returns non-zero
+ * period of 3). This is a helper function for nand_id_len(). Returns non-zero
  * if the repetition has a period of @period; otherwise, returns zero.
  */
 static int nand_id_has_period(u8 *id_data, int arrlen, int period)