WordPress breaks script URLs that contains &

I’m trying to use the Google MAP API.
The URL to use the Javascript library is:
https://maps.googleapis.com/maps/api/js?v=3.4&key=<your_API_key>&sensor=false

However, when I try to enqueue this:

// enforce google map API presence
function put_googlemaps_in_trouwlocatie () {
		wp_enqueue_script( 'googlemaps', 'https://maps.googleapis.com/maps/api/js?v=3.4&key=<your_API_key>&sensor=false' );
}

add_action('init', 'put_googlemaps_in_trouwlocatie');

The URL gets mangled because all (ampersand)s get replaced by (ampersand)#038;

How can I enqueue this script without breaking the URL?
I have tried this while all other plugins were disabled. I’m at a loss here.