diff --git a/tutorials/lora/lorawan-abp.md b/tutorials/lora/lorawan-abp.md
index 15317e4..e2dc793 100644
--- a/tutorials/lora/lorawan-abp.md
+++ b/tutorials/lora/lorawan-abp.md
@@ -19,7 +19,7 @@ import struct
 lora = LoRa(mode=LoRa.LORAWAN, region=LoRa.EU868)
 
 # create an ABP authentication params
-dev_addr = struct.unpack(">l", binascii.unhexlify('00000005'))[0]
+dev_addr = struct.unpack(">l", ubinascii.unhexlify('00000005'))[0]
 nwk_swkey = ubinascii.unhexlify('2B7E151628AED2A6ABF7158809CF4F3C')
 app_swkey = ubinascii.unhexlify('2B7E151628AED2A6ABF7158809CF4F3C')