diff --git a/app/boards/arm/nice_nano/board.cmake b/app/boards/arm/nice_nano/board.cmake
index 12a1d93b..fa847d50 100644
--- a/app/boards/arm/nice_nano/board.cmake
+++ b/app/boards/arm/nice_nano/board.cmake
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: MIT
 
 board_runner_args(nrfjprog "--nrf-family=NRF52" "--softreset")
 include(${ZEPHYR_BASE}/boards/common/blackmagicprobe.board.cmake)
diff --git a/app/boards/arm/proton_c/CMakeLists.txt b/app/boards/arm/proton_c/CMakeLists.txt
index d1b8108c..940af1fe 100644
--- a/app/boards/arm/proton_c/CMakeLists.txt
+++ b/app/boards/arm/proton_c/CMakeLists.txt
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: MIT
 
 if(CONFIG_PINMUX)
 zephyr_library()
diff --git a/app/boards/arm/proton_c/pinmux.c b/app/boards/arm/proton_c/pinmux.c
index 09f3a349..a6aaae0a 100644
--- a/app/boards/arm/proton_c/pinmux.c
+++ b/app/boards/arm/proton_c/pinmux.c
@@ -1,7 +1,7 @@
 /*
  * Copyright (c) 2017 I-SENSE group of ICCS
  *
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: MIT
  */
 
 #include <kernel.h>
diff --git a/app/drivers/zephyr/ec11_trigger.c b/app/drivers/zephyr/ec11_trigger.c
index 55acf45e..709d1fbf 100644
--- a/app/drivers/zephyr/ec11_trigger.c
+++ b/app/drivers/zephyr/ec11_trigger.c
@@ -1,7 +1,7 @@
 /*
  * Copyright (c) 2016 Intel Corporation
  *
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: MIT
  */
 
 #define DT_DRV_COMPAT alps_ec11