diff --git a/experimental/devices/mfrc522/commands/registers.go b/experimental/devices/mfrc522/commands/registers.go
index ec600a9..fc4f6e9 100644
--- a/experimental/devices/mfrc522/commands/registers.go
+++ b/experimental/devices/mfrc522/commands/registers.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
+// Package commands contains the command that a MFRC522 supports.
 package commands
 
 // Register constants