diff --git a/tools/asset-inventory/asset_inventory/api_schema.py b/tools/asset-inventory/asset_inventory/api_schema.py
index 218c0cc87f..9aae9d1853 100644
--- a/tools/asset-inventory/asset_inventory/api_schema.py
+++ b/tools/asset-inventory/asset_inventory/api_schema.py
@@ -285,7 +285,7 @@ def _add_asset_export_fields(cls,
         }]
         if include_resource:
             resource_schema = list(schema)
-            last_modified, _ = bigquery_schema.get_field_by_name(
+            _, last_modified = bigquery_schema.get_field_by_name(
                 resource_schema,
                 'lastModifiedTime')
             if not last_modified:
diff --git a/tools/asset-inventory/tests/test_api_schema.py b/tools/asset-inventory/tests/test_api_schema.py
index bbfc18a777..9e52cfe2a0 100644
--- a/tools/asset-inventory/tests/test_api_schema.py
+++ b/tools/asset-inventory/tests/test_api_schema.py
@@ -201,6 +201,36 @@ def test_for_for_asset_type(self):
         # name, asset_type, timestamp, resource, iam_policy
         self.assertEqual(len(schema), 5)
 
+    def test_resource_last_modified(self):
+        # Test that resource lastModifiedTime takes precedence.
+        APISchema._discovery_document_cache = {
+            'https://www.googleapis.com/discovery/v1/apis/compute/v1/rest': {
+                'id': 'compute.v1',
+                'schemas': {
+                    'Machine': {
+                        'properties': {
+                            'lastModifiedTime': {
+                                'type': 'string',
+                                'description': 'Track time of last change.'
+                            }}}}},
+            'https://content.googleapis.com/discovery/v1/apis': {
+                'items': [{
+                    'name': 'compute',
+                    'version': 'v1',
+                    'discoveryRestUrl': 'https://www.googleapis.com/discovery/v1/apis/compute/v1/rest'}]}}
+        schema = APISchema.bigquery_schema_for_resource(
+            'google.compute.Machine',
+            'Machine',
+            'https://www.googleapis.com/discovery/v1/apis/compute/v1/rest',
+            True, True)
+        data_fields = self.get_schema_data_field(schema)
+        self.assertEqual(
+            [{'field_type': 'STRING',
+              'name': 'lastModifiedTime',
+              'description': 'Track time of last change.',
+              'mode': 'NULLABLE'}],
+            data_fields)
+
     def test_self_recursive_properties(self):
         discovery_doc = {
             'id': 'recursive#api',