diff --git a/CMakeLists.txt b/CMakeLists.txt
index 655a26b..f2c28f7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2021 Aleix Pol Gonzalez <aleixpol@kde.org>
+# SPDX-License-Identifier: BSD-3-Clause
+
 cmake_minimum_required(VERSION 3.16)
 
 project(layershellqt)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 00169ec..be043a9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2021 Aleix Pol Gonzalez <aleixpol@kde.org>
+# SPDX-License-Identifier: BSD-3-Clause
+
 remove_definitions(-DQT_NO_SIGNALS_SLOTS_KEYWORDS)
 
 ecm_add_qtwayland_client_protocol(LAYER_SHELL_SOURCES PROTOCOL ${WaylandProtocols_DATADIR}/stable/xdg-shell/xdg-shell.xml BASENAME xdg-shell)