diff --git a/LICENSE b/LICENSE
index a612ad9..6c9ddc6 100644
--- a/LICENSE
+++ b/LICENSE
@@ -364,10 +364,4 @@ file, then You may include the notice in a location (such as a LICENSE
 file in a relevant directory) where a recipient would be likely to look
 for such a notice.
 
-You may add additional accurate notices of copyright ownership.
-
-Exhibit B - "Incompatible With Secondary Licenses" Notice
----------------------------------------------------------
-
-  This Source Code Form is "Incompatible With Secondary Licenses", as
-  defined by the Mozilla Public License, v. 2.0.
+You may add additional accurate notices of copyright ownership.
\ No newline at end of file
diff --git a/spirographs.py b/spirographs.py
index 21fd4a1..71f3652 100644
--- a/spirographs.py
+++ b/spirographs.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MPL-2.0
 # -*- coding: utf-8 -*-
 
 # Copyright 2021 Alexander Rowsell. Licenced under MPLv2.0