The electrical resistivity and thermopower of the liquid alloy Li-Mg has been measured over the full range of composition. The resistivity of liquid Li-Mg shows strong curvature with composition and follows rather closely the resistivity calculated on the Faber-Ziman theory (1965). The thermopower of liquid Li-Mg deviates from that predicted by a simple extension of the Faber-Ziman theory; possible origins of this deviation are discussed.