diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index f24d49496b..d29f2cfcce 100644
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -881,6 +881,7 @@ static void *image_create_v0(size_t *imagesz, struct image_tool_params *params,
 		cpu_to_le32(payloadsz - headersz);
 	main_hdr->srcaddr   = cpu_to_le32(headersz);
 	main_hdr->ext       = has_ext;
+	main_hdr->version   = 0;
 	main_hdr->destaddr  = cpu_to_le32(params->addr);
 	main_hdr->execaddr  = cpu_to_le32(params->ep);
 
diff --git a/tools/kwbimage.h b/tools/kwbimage.h
index f1ba95c2fa..f74767e633 100644
--- a/tools/kwbimage.h
+++ b/tools/kwbimage.h
@@ -42,7 +42,8 @@ struct main_hdr_v0 {
 	uint8_t  nandeccmode;		/* 0x1       */
 	uint16_t nandpagesize;		/* 0x2-0x3   */
 	uint32_t blocksize;		/* 0x4-0x7   */
-	uint32_t rsvd1;			/* 0x8-0xB   */
+	uint8_t  version;		/* 0x8       */
+	uint8_t  rsvd1[3];		/* 0x9-0xB   */
 	uint32_t srcaddr;		/* 0xC-0xF   */
 	uint32_t destaddr;		/* 0x10-0x13 */
 	uint32_t execaddr;		/* 0x14-0x17 */