diff --git a/boot/bootutil/include/bootutil/crypto/ecdsa_p256.h b/boot/bootutil/include/bootutil/crypto/ecdsa_p256.h
index 4b45b98b..108e4e06 100644
--- a/boot/bootutil/include/bootutil/crypto/ecdsa_p256.h
+++ b/boot/bootutil/include/bootutil/crypto/ecdsa_p256.h
@@ -1,3 +1,9 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2023 Arm Limited
+ */
+
 /*
  * This module provides a thin abstraction over some of the crypto
  * primitives to make it easier to swap out the used crypto library.