diff --git a/nailgun/nailgun/rpc/receiver.py b/nailgun/nailgun/rpc/receiver.py
index 3d01e1cf04..6c0d4e0488 100644
--- a/nailgun/nailgun/rpc/receiver.py
+++ b/nailgun/nailgun/rpc/receiver.py
@@ -1103,14 +1103,34 @@ class NailgunReceiver(object):
                 result[node['uid']] = node.get('data')
 
             elif node['status'] == consts.NODE_STATUSES.ready:
+                incorrect_input = False
                 for row in node.get('data', []):
-                    if not net_utils.is_same_mac(row['mac'],
-                                                 master_network_mac):
-                        row['node_name'] = node_db.name
-                        message = message_template.format(**row)
-                        messages.append(message)
+                    try:
+                        if not net_utils.is_same_mac(row['mac'],
+                                                     master_network_mac):
+                            row['node_name'] = node_db.name
+                            message = message_template.format(**row)
+                            messages.append(message)
+                    # NOTE(aroma): for example when mac's value
+                    # is an empty string
+                    except ValueError as e:
+                        logger.warning(
+                            "Failed to compare mac address "
+                            "from response data (row = {0}) "
+                            "from node with id={1}. "
+                            "Original error:\n {2}"
+                            .format(row, node['uid'], six.text_type(e)))
+                        incorrect_input = True
+                    finally:
                         result[node['uid']].append(row)
 
+                if incorrect_input:
+                    messages.append(
+                        "Something is wrong with response data from node with "
+                        "id={}. Check logs for details."
+                        .format(node['uid'])
+                    )
+
         status = status if not messages else consts.TASK_STATUSES.error
         error_msg = '\n'.join(messages) if messages else error_msg
         logger.debug('Check dhcp message %s', error_msg)
diff --git a/nailgun/nailgun/test/integration/test_rpc_consumer.py b/nailgun/nailgun/test/integration/test_rpc_consumer.py
index ab7c3cd948..54b417a850 100644
--- a/nailgun/nailgun/test/integration/test_rpc_consumer.py
+++ b/nailgun/nailgun/test/integration/test_rpc_consumer.py
@@ -833,6 +833,35 @@ class TestDhcpCheckTask(BaseReciverTestCase):
         )
         self.assertIn(err_msg, self.task.message)
 
+    def test_check_dhcp_resp_empty_mac(self):
+        err_data = [{'mac': ''}]
+        kwargs = {
+            'task_uuid': self.task.uuid,
+            'nodes': [
+                {'uid': str(self.node1.id),
+                 'status': 'ready',
+                 'data': err_data},
+                {'uid': str(self.node2.id),
+                 'status': 'ready',
+                 'data': [{'mac': settings.ADMIN_NETWORK['mac'],
+                           'server_id': '10.20.0.20',
+                           'yiaddr': '10.20.0.131',
+                           'iface': 'eth0'}]}
+            ]
+        }
+
+        self.receiver.check_dhcp_resp(**kwargs)
+        self.db.flush()
+        self.db.refresh(self.task)
+        self.assertEqual(self.task.status, consts.TASK_STATUSES.error)
+        self.assertEqual(self.task.result[self.node1.uid], err_data)
+
+        err_msg = (
+            "Something is wrong with response data from node with id={}"
+            .format(self.node1.id)
+        )
+        self.assertIn(err_msg, self.task.message)
+
 
 class TestConsumer(BaseReciverTestCase):