diff --git a/src/MacAppBundle/CMakeLists.txt b/src/MacAppBundle/CMakeLists.txt
index bacde13b8f..b0c04ff432 100644
--- a/src/MacAppBundle/CMakeLists.txt
+++ b/src/MacAppBundle/CMakeLists.txt
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
 
 #
 # Build and install QuickLook for FCStd files (org.freecad.fcstd)
diff --git a/src/MacAppBundle/QuickLook/CMakeLists.txt b/src/MacAppBundle/QuickLook/CMakeLists.txt
index 7ded90b6a8..542b5ee811 100644
--- a/src/MacAppBundle/QuickLook/CMakeLists.txt
+++ b/src/MacAppBundle/QuickLook/CMakeLists.txt
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
 
 #cmake_minimum_required(VERSION 3.23)
 #project(FCQuickLook)
diff --git a/src/MacAppBundle/QuickLook/GeneratePreviewForURL.m b/src/MacAppBundle/QuickLook/GeneratePreviewForURL.m
index 2c0827e3a4..e33d08ae14 100644
--- a/src/MacAppBundle/QuickLook/GeneratePreviewForURL.m
+++ b/src/MacAppBundle/QuickLook/GeneratePreviewForURL.m
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 #include <CoreFoundation/CoreFoundation.h>
 #include <CoreServices/CoreServices.h>
 #include <QuickLook/QuickLook.h>
diff --git a/src/MacAppBundle/QuickLook/GenerateThumbnailForURL.m b/src/MacAppBundle/QuickLook/GenerateThumbnailForURL.m
index 336c0d4f99..9a01b20f3a 100644
--- a/src/MacAppBundle/QuickLook/GenerateThumbnailForURL.m
+++ b/src/MacAppBundle/QuickLook/GenerateThumbnailForURL.m
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 #include <CoreFoundation/CoreFoundation.h>
 #include <CoreServices/CoreServices.h>
 #include <QuickLook/QuickLook.h>
diff --git a/src/MacAppBundle/QuickLook/main.c b/src/MacAppBundle/QuickLook/main.c
index aa320bf0f8..970b0885a3 100644
--- a/src/MacAppBundle/QuickLook/main.c
+++ b/src/MacAppBundle/QuickLook/main.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 //==============================================================================
 //
 //	DO NO MODIFY THE CONTENT OF THIS FILE