diff --git a/neutron/services/segments/plugin.py b/neutron/services/segments/plugin.py
index 68aef08b188..cd0d8dbaef1 100644
--- a/neutron/services/segments/plugin.py
+++ b/neutron/services/segments/plugin.py
@@ -236,10 +236,10 @@ class NovaSegmentNotifier(object):
             total += int(netaddr.IPAddress(pool['end']) -
                          netaddr.IPAddress(pool['start'])) + 1
         if total:
-            if subnet['gateway_ip']:
+            if subnet.get('gateway_ip'):
                 total += 1
                 reserved += 1
-            if subnet['enable_dhcp']:
+            if subnet.get('enable_dhcp'):
                 reserved += 1
         return total, reserved
 
diff --git a/neutron/tests/unit/extensions/test_segment.py b/neutron/tests/unit/extensions/test_segment.py
index bcf8b3cd21a..27157df4e6c 100644
--- a/neutron/tests/unit/extensions/test_segment.py
+++ b/neutron/tests/unit/extensions/test_segment.py
@@ -1545,10 +1545,10 @@ class TestNovaSegmentNotifier(SegmentAwareIpamTestCase):
             total += int(netaddr.IPAddress(pool['end']) -
                          netaddr.IPAddress(pool['start'])) + 1
         if total:
-            if subnet['gateway_ip']:
+            if subnet.get('gateway_ip'):
                 total += 1
                 reserved += 1
-            if subnet['enable_dhcp']:
+            if subnet.get('enable_dhcp'):
                 reserved += 1
         return total, reserved