Hackley and Miller (1995) reported that complex sequences of finger movements are preceded by larger LRP amplitudes than simple finger flexions. The present study seeks to assess this LRP enhancement in more detail. Experiment 1 included two further conditions requiring either repeated movements with one and the same finger or simultaneous movements with three fingers. Although a clear foreperiod LRP was obtained, its amplitude was insensitive to the movement conditions. Therefore, Experiment 2 assessed whether effects of movement complexity depend on the precision of the required movement. However, we observed larger LRP amplitudes to complex than to simple movements under both stringent and lenient response conditions, ruling out an explanation in terms of required movement precision. Possible explanations for the inconsistency of the complexity effects on the foreperiod LRP are discussed.