diff --git a/bbn_wave_freq_m5atomS3/bbn_wave_freq_m5atomS3.ino b/bbn_wave_freq_m5atomS3/bbn_wave_freq_m5atomS3.ino
index 098c6a3..b7a37de 100644
--- a/bbn_wave_freq_m5atomS3/bbn_wave_freq_m5atomS3.ino
+++ b/bbn_wave_freq_m5atomS3/bbn_wave_freq_m5atomS3.ino
@@ -1,5 +1,6 @@
 /*
-
+  Copyright 2024, Mikhail Grushinskiy
+  
   Estimate vessel heave (vertical displacement) in ocean waves using IMU on esp32 (m5atomS3)
 
   See: https://bareboat-necessities.github.io/my-bareboat/bareboat-math.html