The impact of the market orientation on performance has been addressed widely by the academic literature; however, the connection between the market orientation concept and born-global firms’ performance has not been considered yet. In order to explore how market orientation of born-global firms impacts on their performance, we have to verify the most suitable tool for measuring bornglobals' market orientation: are the traditional scales considered by the specific literature (MKTOR and MARKOR) equally valid? If they are not, which would be the proper modification? Through a qualitative research we suggest a modification of the traditional scales for measuring market orientation in firms that internationalize rapidly from inception.