diff --git a/src/C++/Driver/src/TestM5/TestM5.ino b/src/C++/Driver/src/TestM5/TestM5.ino
index d57c91b..7f2e5b9 100644
--- a/src/C++/Driver/src/TestM5/TestM5.ino
+++ b/src/C++/Driver/src/TestM5/TestM5.ino
@@ -1,3 +1,5 @@
+// Test code is merged to main sensor code os this file is not needed anymore
+
 #include <Wire.h>
 #include "Adafruit_SGP30.h"