diff --git a/src/benchmark/benchmark_ipc_channel.cpp b/src/benchmark/benchmark_ipc_channel.cpp
index a8bcfad5e..a0d25e177 100644
--- a/src/benchmark/benchmark_ipc_channel.cpp
+++ b/src/benchmark/benchmark_ipc_channel.cpp
@@ -1,21 +1,6 @@
-/*
-Minetest
-Copyright (C) 2024 DS
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or
-(at your option) any later version.
-
-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 Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
+// SPDX-FileCopyrightText: 2024 Luanti authors
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
 
 #include "catch.h"
 #include "threading/ipc_channel.h"
diff --git a/src/threading/ipc_channel.cpp b/src/threading/ipc_channel.cpp
index 24a76f901..cebac56fa 100644
--- a/src/threading/ipc_channel.cpp
+++ b/src/threading/ipc_channel.cpp
@@ -1,22 +1,6 @@
-/*
-Minetest
-Copyright (C) 2022 TurkeyMcMac, Jude Melton-Houghton <jwmhjwmh@gmail.com>
-Copyright (C) 2024 DS
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or
-(at your option) any later version.
-
-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 Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
+// SPDX-FileCopyrightText: 2024 Luanti authors
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
 
 #include "ipc_channel.h"
 #include "debug.h"
diff --git a/src/threading/ipc_channel.h b/src/threading/ipc_channel.h
index 50da2e193..71bb2b2f6 100644
--- a/src/threading/ipc_channel.h
+++ b/src/threading/ipc_channel.h
@@ -1,22 +1,6 @@
-/*
-Minetest
-Copyright (C) 2022 TurkeyMcMac, Jude Melton-Houghton <jwmhjwmh@gmail.com>
-Copyright (C) 2024 DS
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or
-(at your option) any later version.
-
-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 Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
+// SPDX-FileCopyrightText: 2024 Luanti authors
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
 
 #pragma once