In this paper a fault based attack on MDS-AES has been proposed. It has been shown that inducing random byte fault at the input of the ninth round of the MDS-AES algorithm the key can be retrieved. Simulation shows that two faulty cipher text pairs are required to deduce the key without any brute-force search. If one faulty encryption is considered then the actual key can be ascertained with a brute-force search of complexity 216. To the best of our knowledge, this work is the first attempt to explore fault based attack on MDS-AES.