How to lazy load a many-to-many collection in hibernate?

I can lazy load one-to-many and many-to-one associations but I can't with the many-to-many associations.

We have a city in which we have merchants which have addresses. Merchants can have multiple addresses and multiple merchants can have the same addresses.

When we load a merchant with a get,

Merchant merchant = (Merchant) hib_session.get(Merchant.class, id);
System.out.println(merchant.getName());

it's ok, addresses aren't load until we iterate over them.

But when we load a list of merchants,

City city = (City) hib_session.get(City.class, city_name);
for(Merchant merchant : city.getMerchants()) {
  System.out.println(merchant.getName());
}

even if we don't get the addresses, hibernate automatically loads them.

Here's an example of my problem.

The mapping:

<class name="Merchant" table="Merchants" lazy="true">
  <id name="id"
    type="long"
    column="id">
    <generator class="native"></generator>
  </id>
  <set name="addresses" table="AdressesMerchant" lazy="true">
    <key column="merchant_id"></key>
    <many-to-many class="Adresses" column="address_id"/>
  </set>
</class>

<class name="Address" table="Adresses" lazy="true">
  <id name="id"
    type="long"
    column="id">
    <generator class="native"></generator>
  </id>
  <set name="merchants" table="AdressesMerchant" lazy="true">
    <key column="adress_id"/>
    <many-to-many column="merchant_id" class="Merchant"/>