This study was aimed at analysing the distortion produced by an error in the WHOQOLHIV instrument's original syntax; syntax is proposed which would correct such error. SPSS software was used for testing the new syntax which was then sent to researchers regarding the topic being considered to verify the presence of errors. It was noted that the proposed syntax met its goal and no irregularity was found. It was thus concluded that the WHOQOL-HIV syntax had an error which jeopardised this instrument's fidelity. Using the syntax proposed in this study would enable superior precision in portraying the empirical reality of the quality of life for HIV-positive people.