Originally, we planned to include a dedicated instrument at 30 GHz, which is an upgraded version of the VSA source substractor converted into a polarimeter, will be used to produce a catalogue of polarization measurements at 30 GHz for radiosources with fluxes above 200 mJy in intensity. This information could be used to correct the QUIJOTE maps from the contamination of radiosources. Figure shows the two antennas of the Source Subtractor, already installed at the Teide Observatory (Tenerife, Spain). Finally, this correction of point sources will be done using VLA observations.