We investigated the modulation of Facebook-related stimuli on response inhibition in Problematic Facebook Use (PFU) by recording the event-related potentials during an emotional Go/Nogo Task. Twenty-two Problematic Facebook users and 23 Non-problematic users were recruited based on their score on the Problematic Facebook Use Scale. The Go/Nogo task included Facebook-related, unpleasant, pleasant, and neutral pictures. The amplitudes of the Nogo-N2 and the Nogo-P3 were computed as measures of the detection of response conflict and response inhibition, respectively. Reaction times and accuracy were also measured.