Randomness amplification is a protocol that outputs nearly uniform bits using inputs generated from weak source. In this work, we present some negative results for two-device randomness amplification protocol with weak source. Specifically, given a two-device randomness amplification protocol with inputs generated from a weak source that has log n min-entropy, then there exists a strategy which has the highest probability of passing every round of the protocol, such that if the protocol accepts, then the output of the protocol is deterministic given inputs for all round and side information.