Available purely software based code attestation protocols have recently been shown to be cheatable. In this work we propose to upload compressed instruction code to make the code attestation protocol robust against a so called compresssion attack. The described secure code attestation protocol makes use of recently proposed microcontroller architectures for reading out compressed instruction code. We point out that the proposed concept only makes sense if the provided cost/benefit ratio for the aforementioned microcontroller is higher than an alternative hardware based solution requiring a tamperresistant hardware module.