diff --git a/gcp_flowlogs_reader/gcp_flowlogs_reader.py b/gcp_flowlogs_reader/gcp_flowlogs_reader.py
index 4260002..f7235dc 100644
--- a/gcp_flowlogs_reader/gcp_flowlogs_reader.py
+++ b/gcp_flowlogs_reader/gcp_flowlogs_reader.py
@@ -62,6 +62,12 @@ class ResourceLabels(NamedTuple):
     subnetwork_name: str
 
 
+def safe_tuple_from_dict(cls, attrs):
+    attr_payload = {k: attrs[k] for k in cls._fields}
+    return cls(**attr_payload)
+
+
+
 class FlowRecord:
     src_ip: Union[IPv4Address, IPv6Address]
     src_port: int
@@ -115,9 +121,8 @@ def __init__(self, entry: StructEntry):
             ('dest_location', GeographicDetails),
         ]:
             try:
-                attr_payload = {k: flow_payload[k] for k in cls._fields}
-                value = cls(**attr_payload)
-            except (KeyError, TypeError):
+                value = safe_tuple_from_dict(cls, flow_payload[attr])
+            except (KeyError, TypeError) as e:
                 setattr(self, attr, None)
             else:
                 setattr(self, attr, value)
diff --git a/tests/test_gcp_flowlogs_reader.py b/tests/test_gcp_flowlogs_reader.py
index f1699c2..1aa924c 100644
--- a/tests/test_gcp_flowlogs_reader.py
+++ b/tests/test_gcp_flowlogs_reader.py
@@ -23,6 +23,8 @@
     GeographicDetails,
     ResourceLabels,
 )
+from gcp_flowlogs_reader.gcp_flowlogs_reader import safe_tuple_from_dict
+
 
 PREFIX = 'gcp_flowlogs_reader.gcp_flowlogs_reader.{}'.format
 SAMPLE_PAYLOADS = [
@@ -222,10 +224,10 @@ def test_init_outbound(self):
             ('rtt_msec', 61),
             ('reporter', 'DEST'),
             ('src_instance', None),
-            ('dest_instance', InstanceDetails(**SAMPLE_PAYLOADS[0]['dest_instance'])),
+            ('dest_instance', safe_tuple_from_dict(InstanceDetails, SAMPLE_PAYLOADS[0]['dest_instance'])),
             ('src_vpc', None),
-            ('dest_vpc', VpcDetails(**SAMPLE_PAYLOADS[0]['dest_vpc'])),
-            ('src_location', GeographicDetails(**SAMPLE_PAYLOADS[0]['src_location'])),
+            ('dest_vpc', safe_tuple_from_dict(VpcDetails, SAMPLE_PAYLOADS[0]['dest_vpc'])),
+            ('src_location', safe_tuple_from_dict(GeographicDetails, SAMPLE_PAYLOADS[0]['src_location'])),
             ('dest_location', None),
         ]:
             with self.subTest(attr=attr):
@@ -247,12 +249,12 @@ def test_init_inbound(self):
             ('packets_sent', 6),
             ('rtt_msec', None),
             ('reporter', 'SRC'),
-            ('src_instance', InstanceDetails(**SAMPLE_PAYLOADS[1]['src_instance'])),
+            ('src_instance', safe_tuple_from_dict(InstanceDetails, SAMPLE_PAYLOADS[1]['src_instance'])),
             ('dest_instance', None),
-            ('src_vpc', VpcDetails(**SAMPLE_PAYLOADS[1]['src_vpc'])),
+            ('src_vpc', safe_tuple_from_dict(VpcDetails, SAMPLE_PAYLOADS[1]['src_vpc'])),
             ('dest_vpc', None),
             ('src_location', None),
-            ('dest_location', GeographicDetails(**SAMPLE_PAYLOADS[1]['dest_location'])),
+            ('dest_location', safe_tuple_from_dict(GeographicDetails, SAMPLE_PAYLOADS[1]['dest_location'])),
         ]:
             with self.subTest(attr=attr):
                 actual = getattr(flow_record, attr)
@@ -319,6 +321,8 @@ def test_to_dict(self):
         ]:
             with self.subTest(attr=attr):
                 actual = flow_dict[attr]
+                if isinstance(expected, dict):
+                    expected = {k: v for k, v in expected.items() if k != 'subnetwork_region'}
                 self.assertEqual(actual, expected)
 
     def test_from_payload(self):
@@ -498,7 +502,7 @@ def test_multiple_projects(
         actual = list(reader)
         expected = [FlowRecord(x) for x in SAMPLE_ENTRIES]
         self.assertEqual(actual, expected)
-        self.assertEqual(reader.bytes_processed, 576)
+        self.assertEqual(reader.bytes_processed, 544)
 
         # Test the client getting called correctly with multiple projects
         expression = (