diff --git a/sites/all/modules/migrate/migrate_example/beer.inc b/sites/all/modules/migrate/migrate_example/beer.inc
index 702e894..d883bde 100644
--- a/sites/all/modules/migrate/migrate_example/beer.inc
+++ b/sites/all/modules/migrate/migrate_example/beer.inc
@@ -97,7 +97,7 @@ class BeerTermMigration extends BasicExampleMigration {
              ->orderBy('style_parent', 'ASC');

     // Create a MigrateSource object, which manages retrieving the input data.
-    $this->source = new MigrateSourceSQL($query);
+    $this->source = new MigrateSourceSQL($query, array(), NULL, array('map_joinable' => FALSE));

     // Set up our destination - terms in the migrate_example_beer_styles
     // vocabulary (note that we pass the machine name of the vocabulary).
@@ -209,7 +209,7 @@ class BeerUserMigration extends BasicExampleMigration {
     $query = db_select('migrate_example_beer_account', 'mea')
              ->fields('mea', array('aid', 'status', 'posted', 'name',
                'nickname', 'password', 'mail', 'sex', 'beers'));
-    $this->source = new MigrateSourceSQL($query);
+    $this->source = new MigrateSourceSQL($query, array(), NULL, array('map_joinable' => FALSE));
     $this->destination = new MigrateDestinationUser();
     $this->map = new MigrateSQLMap($this->machineName,
         array('aid' => array(
@@ -344,7 +344,7 @@ class BeerNodeMigration extends BasicExampleMigration {
     // drush migrate-status) will be cached - this can be very handy when
     // dealing with a slow source database.
     $this->source = new MigrateSourceSQL($query, array(), $count_query,
-      array('cache_counts' => TRUE));
+      array('cache_counts' => TRUE), array('map_joinable' => FALSE));

     // Set up our destination - nodes of type migrate_example_beer
     $this->destination = new MigrateDestinationNode('migrate_example_beer');
@@ -477,7 +477,7 @@ class BeerCommentMigration extends BasicExampleMigration {
              ->fields('mec', array('cid', 'cid_parent', 'name', 'mail', 'aid',
                'body', 'bid', 'subject'))
              ->orderBy('cid_parent', 'ASC');
-    $this->source = new MigrateSourceSQL($query);
+    $this->source = new MigrateSourceSQL($query, array(), NULL, array('map_joinable' => FALSE));
     // Note that the machine name passed for comment migrations is
     // 'comment_node_' followed by the machine name of the node type these
     // comments are attached to.