diff --git a/src/Mod/Help/CMakeLists.txt b/src/Mod/Help/CMakeLists.txt
index 4c4a67d95d..3ddfe2dab3 100644
--- a/src/Mod/Help/CMakeLists.txt
+++ b/src/Mod/Help/CMakeLists.txt
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 IF (BUILD_GUI)
     PYSIDE_WRAP_RC(Help_QRC_SRCS Resources/Help.qrc)
 ENDIF (BUILD_GUI)
diff --git a/src/Mod/Help/Help.py b/src/Mod/Help/Help.py
index a69d8a6477..738cc95e4f 100644
--- a/src/Mod/Help/Help.py
+++ b/src/Mod/Help/Help.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 # ***************************************************************************
 # *   Copyright (c) 2021 Yorik van Havre <yorik@uncreated.net>              *
 # *                                                                         *
diff --git a/src/Mod/Help/InitGui.py b/src/Mod/Help/InitGui.py
index 96683c71b8..b43faf41a2 100644
--- a/src/Mod/Help/InitGui.py
+++ b/src/Mod/Help/InitGui.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 # ***************************************************************************
 # *   Copyright (c) 2021 Yorik van Havre <yorik@uncreated.net>              *
 # *                                                                         *
diff --git a/src/Mod/Help/default.css b/src/Mod/Help/default.css
index dd281cbf64..e33e97d065 100644
--- a/src/Mod/Help/default.css
+++ b/src/Mod/Help/default.css
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
 /* our own FreeCAD styling */
 
 html { color: #000000; font-family: "sans"; background: #ffffff; }