diff --git a/tools/imximage.c b/tools/imximage.c
index 895c9de7b1..5e8e4701d3 100644
--- a/tools/imximage.c
+++ b/tools/imximage.c
@@ -524,11 +524,14 @@ static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd,
 
 	/*
 	 * ROM bug alert
-	 * mx53 only loads 512 byte multiples.
-	 * The remaining fraction of a block bytes would
-	 * not be loaded.
+	 *
+	 * MX53 only loads 512 byte multiples in case of SD boot.
+	 * MX53 only loads NAND page multiples in case of NAND boot and
+	 * supports up to 4096 byte large pages, thus align to 4096.
+	 *
+	 * The remaining fraction of a block bytes would not be loaded!
 	 */
-	*header_size_ptr = ROUND(sbuf->st_size + imxhdr->flash_offset, 512);
+	*header_size_ptr = ROUND(sbuf->st_size + imxhdr->flash_offset, 4096);
 }
 
 int imximage_check_params(struct mkimage_params *params)
diff --git a/tools/imximage.h b/tools/imximage.h
index 1445c1ee07..5c929e4987 100644
--- a/tools/imximage.h
+++ b/tools/imximage.h
@@ -157,13 +157,14 @@ typedef struct {
 	dcd_v2_t dcd_table;
 } imx_header_v2_t;
 
+/* The header must be aligned to 4k on MX53 for NAND boot */
 struct imx_header {
 	union {
 		imx_header_v1_t hdr_v1;
 		imx_header_v2_t hdr_v2;
 	} header;
 	uint32_t flash_offset;
-};
+} __attribute__((aligned(4096)));
 
 typedef void (*set_dcd_val_t)(struct imx_header *imxhdr,
 					char *name, int lineno,