The paper confronts the way discrimination is understood in law number 20.609 with the way it is understood in Human Rights International Law and in the Chilean Constitutional Law. Particularly, three constitutive elements of this understanding are compared: the concept of discrimination, the role that suspicious categories have in identifying a discriminatory conduct and the solutions given to the collision among non-discrimination and other fundamental rights or constitutional protected legal rights. This confrontation allows to form a negative opinion about the usefulness of the court action included in the mentioned law.