diff --git a/deployments/crypto/opteesp/default_crypto.dts.in b/deployments/crypto/opteesp/default_crypto.dts.in
index 2646239..26aa41b 100644
--- a/deployments/crypto/opteesp/default_crypto.dts.in
+++ b/deployments/crypto/opteesp/default_crypto.dts.in
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -16,6 +16,7 @@
 	execution-state = <0>; /* AArch64 */
 	xlat-granule = <0>; /* 4KiB */
 	messaging-method = <0>; /* Direct messaging only */
+	legacy-elf-format = <1>;
 
 	device-regions {
 		compatible = "arm,ffa-manifest-device-regions";