diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
index c50a43b447d2..3de22f0f79d7 100644
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -287,7 +287,7 @@ struct spinand_device;
 
 /**
  * struct spinand_id - SPI NAND id structure
- * @data: buffer containing the id bytes. Currently 4 bytes large, but can
+ * @data: buffer containing the id bytes. Currently 5 bytes large, but can
  *	  be extended if required
  * @len: ID length
  */