Comparison of the stellar masses of SMGs as derived by M10, H11 and in the present work using the stellar population synthesis models of Bruzual & Charlot (2003, and Maraston (2005, . The different symbols indicate the stellar masses derived by M10 (red circles), H11 (blue stars), and our new estimates based on the SED modelling method of Cirasuolo et al. (2010, C10 for three alternative forms of star formation history: double component model (red squares), exponentially declining tau model (light blue triangles) and single burst (green pluses). All the derived masses have been converted to the Chabrier (2003) IMF. Small symbols denote z < 0.5 SMGs. The M10 stellar masses are consistent with our new estimates for the double-component models, whereas the H11 stellar masses are consistent with single component models, and are on average a factor of  ≃2.5 smaller than the double-component estimates (see Table 1).