diff --git a/build-support/3rd-party/netanim-cmakelists.cmake b/build-support/3rd-party/netanim-cmakelists.cmake
index ce72c733a..62f47d557 100644
--- a/build-support/3rd-party/netanim-cmakelists.cmake
+++ b/build-support/3rd-party/netanim-cmakelists.cmake
@@ -1,17 +1,6 @@
 # Copyright (c) 2017-2021 Universidade de Brasília
 #
-# This program is free software; you can redistribute it and/or modify it under
-# the terms of the GNU General Public License version 2 as published by the Free
-# Software Foundation;
-#
-# This program is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
-# details.
-#
-# You should have received a copy of the GNU General Public License along with
-# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
-# Place, Suite 330, Boston, MA  02111-1307 USA
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Author: Gabriel Ferreira <gabrielcarvfer@gmail.com>
 
diff --git a/src/wifi/model/wifi-units.h b/src/wifi/model/wifi-units.h
index ab1fe6fd6..32e039a4c 100644
--- a/src/wifi/model/wifi-units.h
+++ b/src/wifi/model/wifi-units.h
@@ -1,18 +1,7 @@
 /*
  * Copyright (c) 2024
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation;
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * SPDX-License-Identifier: GPL-2.0-only
  *
  * Authors: Jiwoong Lee <porce@berkeley.edu>
  *          Sébastien Deronne <sebastien.deronne@gmail.com>
diff --git a/src/wifi/test/wifi-mlo-test.h b/src/wifi/test/wifi-mlo-test.h
index 513695449..8cd5b33e2 100644
--- a/src/wifi/test/wifi-mlo-test.h
+++ b/src/wifi/test/wifi-mlo-test.h
@@ -1,18 +1,7 @@
 /*
  * Copyright (c) 2022 Universita' degli Studi di Napoli Federico II
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation;
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * SPDX-License-Identifier: GPL-2.0-only
  *
  * Author: Stefano Avallone <stavallo@unina.it>
  */