diff --git a/examples/DHT12/dht12.py b/examples/DHT12/dht12.py
index 301994a..345af52 100644
--- a/examples/DHT12/dht12.py
+++ b/examples/DHT12/dht12.py
@@ -1,5 +1,7 @@
 """
 MicroPython Aosong DHT12 I2C driver
+https://github.com/mcauser/micropython-dht12
+MIT License, Copyright (c) 2016 Mike Causer
 """
 
 class DHTBaseI2C: