Mock-spectra test designed to investigate the impact on the outcome of the SSP fitting when nebular continuum emission is present in the data, but neglected in the analysis. We created a synthetic sample of 30 linear combinations of SSP, with a constant contribution of old (metal-poor), and intermediate age (intermediate metallicity) SSPs, and a varying contribution of a young (metal-rich) SSP that include nebular continuum contribution (computed using FSPS, i.e., Neb. A approach). Both columns show the real age (top row), metallicity (second row), and stellar mass (third row) of each mock spectra in the y-axis, and the recovered value in the x-axis. The bottom panels show an histogram of the recoved E(B-V) values, and the vertical dashed red line shows the real E(B-V) applied to the mock spectra (0.2). The left column shows the results obtained when nebular continuum emission is accounted for in the templates used to fit the data, and the right column shows the same results when nebular continuum emission is neglected from the fitting. It is remarkable that when existing nebular emission is neglected in the fitting, we obtain an anticorrelation between the real metallicity and its recovered values.