diff --git a/Teensy_Continuity_Tester/Matrix_Decoder_4p0.ino b/Teensy_Continuity_Tester/Matrix_Decoder_4p0.ino
index 45e9c16..4a218d3 100644
--- a/Teensy_Continuity_Tester/Matrix_Decoder_4p0.ino
+++ b/Teensy_Continuity_Tester/Matrix_Decoder_4p0.ino
@@ -1,4 +1,4 @@
-/*
+/* Copyright 2020 Frank Adams
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at