Grammatically masculine role-nouns (e.g., "Studenten"masc.'students') can refer to men and women but may favor an interpretation where only men are considered the referent. If true, this has implications for a society aiming to achieve equal representation in the workplace since, for example, job adverts use such role descriptions. To investigate the interpretation of role-nouns, the present ERP study assessed grammatical gender processing in German. Twenty participants read sentences where a role-noun (masculine or feminine) introduced a group of people, followed by a congruent (masculine-"men", feminine-"women") or incongruent (masculine-"women", feminine-"men") continuation. Both for feminine-"men" and masculine-"women" continuations a P600 (500 to 800 ms) was observed; another positivity was already present from 300 to 500 ms for feminine-men continuations but critically not for masculine-women continuations. The results imply a male-biased rather than gender-neutral interpretation of the masculine--despite widespread usage of the masculine as a gender-neutral form--suggesting that masculine forms are inadequate for representing genders equally.