diff --git a/app/Kconfig b/app/Kconfig
index 28d2aa2e1..484bd7981 100644
--- a/app/Kconfig
+++ b/app/Kconfig
@@ -1,3 +1,6 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
 mainmenu "ZMK Firmware"
 
 menu "ZMK"
diff --git a/app/boards/Kconfig b/app/boards/Kconfig
index 1c645e6b2..fe841c487 100644
--- a/app/boards/Kconfig
+++ b/app/boards/Kconfig
@@ -1 +1,4 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
 rsource "shields/*/Kconfig.shield"
diff --git a/app/drivers/zephyr/Kconfig b/app/drivers/zephyr/Kconfig
index 6b177fb1b..b8b2b1be4 100644
--- a/app/drivers/zephyr/Kconfig
+++ b/app/drivers/zephyr/Kconfig
@@ -1,3 +1,6 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
 config ZMK_KSCAN_GPIO_DRIVER
 	bool "Enable GPIO kscan driver to simulate key presses"
 	default y