listenTo does not hear its respective trigger

I have several other listenTo that respond correctly to your trigger, but that below is not responding, I tried anyway to make it respond, but all attempts were unsuccessful.

addFotoPrincipal: function(){
            app.vent.trigger('fotoPrincipal');
        },

this.listenTo(app.vent, 'fotoPrincipal', function(){
            console.log('teste');
        });