diff --git a/metalsmith/test/test_metalsmith_instances.py b/metalsmith/test/test_metalsmith_instances.py
index da91b20..7a0578c 100644
--- a/metalsmith/test/test_metalsmith_instances.py
+++ b/metalsmith/test/test_metalsmith_instances.py
@@ -55,6 +55,7 @@ class TestMetalsmithInstances(unittest.TestCase):
     def test_reserve(self):
         provisioner = mock.Mock()
         instances = [{
+            'hostname': 'node-1',
             'name': 'node',
             'candidates': ['other_node'],
             'resource_class': 'boxen',
@@ -73,6 +74,7 @@ class TestMetalsmithInstances(unittest.TestCase):
         result = mi.reserve(provisioner, instances, True)
         provisioner.reserve_node.assert_has_calls([
             mock.call(
+                hostname='node-1',
                 candidates=['other_node', 'node'],
                 capabilities={'foo': 'bar'},
                 conductor_group='group',
@@ -80,6 +82,7 @@ class TestMetalsmithInstances(unittest.TestCase):
                 traits=['this', 'that']
             ),
             mock.call(
+                hostname=None,
                 candidates=None,
                 capabilities=None,
                 conductor_group=None,
diff --git a/metalsmith_ansible/ansible_plugins/modules/metalsmith_instances.py b/metalsmith_ansible/ansible_plugins/modules/metalsmith_instances.py
index 405a080..4aad599 100644
--- a/metalsmith_ansible/ansible_plugins/modules/metalsmith_instances.py
+++ b/metalsmith_ansible/ansible_plugins/modules/metalsmith_instances.py
@@ -268,6 +268,7 @@ def reserve(provisioner, instances, clean_up):
             candidates = None
         try:
             node = provisioner.reserve_node(
+                hostname=instance.get('hostname'),
                 resource_class=instance.get('resource_class', 'baremetal'),
                 capabilities=instance.get('capabilities'),
                 candidates=candidates,