diff --git a/include/image.h b/include/image.h
index 34b0ea71d2..068a8bbb2d 100644
--- a/include/image.h
+++ b/include/image.h
@@ -290,6 +290,7 @@ typedef struct nm_header {
 	__be32		nm_start_tag; /* BLST (0x424c5354) */
 	__be32		nm_version;  /* U-boot version number */
 	__be32		nm_length;  /* U-boot image length */
+	uint8_t		reserved[244];  /* Reserved */
 	struct image_header header;
 } nm_header_t;