Google Maps Autocomplete not working for some reason

Here is the function:

function initializeMap(){
        var LatLng = {lat: 20.23, lng: -8.28460};
        var mapOptions = {
            center: LatLng,
            zoom: 6,
            scrollwheel:false
        }

        var map = new google.maps.Map(document.getElementById('map'), mapOptions);

        var marker = new google.maps.Marker({
                position: LatLng,
                map: map,
                draggable: true,
                title: "Binko"
        });

        var input = document.getElementById('accommodation_address');
        var autocomplete = new google.maps.places.Autocomplete(input);
        autocomplete.bindTo('bounds',map);

        google.maps.event.addListener(autocomplete, 'place_changed',function(){
            var place=autocomplete.getPlace();
            if (!place.geometry){
                return;
            }
            if (place.geometry.viewport) {
                map.fitBounds(place.geometry.viewport);
            } else {
                map.setCenter(place.geometry.location);
                map.setZoom(17);
            }

            marker.setPlace( ({
                placeId: place.place_id,
                location: place.geometry.location
            }));
        });
    };

google.maps.event.addDomListener(window, 'load', initializeMap);

I get the uncaught type error, saying autocomplete is not defined, even though I included the library. My API call looks like this: src="https://maps.googleapis.com/maps/api/js?key=MY_API_KEY&libraries=places">