diff --git a/targets/corstone-300/target.cpp b/targets/corstone-300/target.cpp
index 8f8db83..f186ddf 100644
--- a/targets/corstone-300/target.cpp
+++ b/targets/corstone-300/target.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2021 Arm Limited. All rights reserved.
+ * SPDX-FileCopyrightText: Copyright 2020-2021, 2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -43,6 +43,7 @@
 
 #define ETHOSU_BASE_ADDRESS 0x48102000
 #define ETHOSU_IRQ          56
+#define ETHOSU_IRQ_PRIORITY 5
 
 #define ETHOSU0_TA0_BASE_ADDRESS 0x48103000
 #define ETHOSU0_TA1_BASE_ADDRESS 0x48103200
@@ -312,6 +313,7 @@
 
     // Assumes SCB->VTOR point to RW memory
     NVIC_SetVector(static_cast<IRQn_Type>(ETHOSU_IRQ), (uint32_t)&ethosuIrqHandler);
+    NVIC_SetPriority(static_cast<IRQn_Type>(ETHOSU_IRQ), ETHOSU_IRQ_PRIORITY);
     NVIC_EnableIRQ(static_cast<IRQn_Type>(ETHOSU_IRQ));
 #endif
 
diff --git a/targets/corstone-310/target.cpp b/targets/corstone-310/target.cpp
index a91bc67..915ba0d 100644
--- a/targets/corstone-310/target.cpp
+++ b/targets/corstone-310/target.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2022 Arm Limited. All rights reserved.
+ * SPDX-FileCopyrightText: Copyright 2020-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -43,6 +43,7 @@
 
 #define ETHOSU_BASE_ADDRESS 0x50004000
 #define ETHOSU_IRQ          16
+#define ETHOSU_IRQ_PRIORITY 5
 
 #define ETHOSU0_TA0_BASE_ADDRESS 0x58103000
 #define ETHOSU0_TA1_BASE_ADDRESS 0x58103200
@@ -316,6 +317,7 @@
 
     // Assumes SCB->VTOR point to RW memory
     NVIC_SetVector(static_cast<IRQn_Type>(ETHOSU_IRQ), (uint32_t)&ethosuIrqHandler);
+    NVIC_SetPriority(static_cast<IRQn_Type>(ETHOSU_IRQ), ETHOSU_IRQ_PRIORITY);
     NVIC_EnableIRQ(static_cast<IRQn_Type>(ETHOSU_IRQ));
 #endif