diff --git a/src/ethosu_driver.c b/src/ethosu_driver.c
index 3383ef3..866b94c 100644
--- a/src/ethosu_driver.c
+++ b/src/ethosu_driver.c
@@ -485,7 +485,7 @@
                      void *user_arg)
 {
     const struct cop_data_s *data_ptr = custom_data_ptr;
-    const struct cop_data_s *data_end = custom_data_ptr + custom_data_size;
+    const struct cop_data_s *data_end = (struct cop_data_s *)((ptrdiff_t)custom_data_ptr + custom_data_size);
     int return_code                   = 0;
 
     // First word in custom_data_ptr should contain "Custom Operator Payload 1"
diff --git a/zephyr/module.yml b/zephyr/module.yml
index 68fa9a5..08831dd 100644
--- a/zephyr/module.yml
+++ b/zephyr/module.yml
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 Arm Limited. All rights reserved.
+# Copyright (c) 2021-2022 Arm Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 name: hal_ethos_u
 build: