diff --git a/irr/src/CGLTFMeshFileLoader.cpp b/irr/src/CGLTFMeshFileLoader.cpp
index 120b2c453..c6c498b23 100644
--- a/irr/src/CGLTFMeshFileLoader.cpp
+++ b/irr/src/CGLTFMeshFileLoader.cpp
@@ -1,3 +1,6 @@
+// Minetest
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 #include "CGLTFMeshFileLoader.h"
 
 #include "coreutil.h"
diff --git a/irr/src/CGLTFMeshFileLoader.h b/irr/src/CGLTFMeshFileLoader.h
index 30e9c03bb..880cf8196 100644
--- a/irr/src/CGLTFMeshFileLoader.h
+++ b/irr/src/CGLTFMeshFileLoader.h
@@ -1,3 +1,6 @@
+// Minetest
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 #pragma once
 
 #include "ISkinnedMesh.h"
diff --git a/irr/src/tests/testCGLTFMeshFileLoader.cpp b/irr/src/tests/testCGLTFMeshFileLoader.cpp
index c70c03a24..3c46d53cc 100644
--- a/irr/src/tests/testCGLTFMeshFileLoader.cpp
+++ b/irr/src/tests/testCGLTFMeshFileLoader.cpp
@@ -1,3 +1,6 @@
+// Minetest
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 #include "CReadFile.h"
 #include "vector3d.h"