diff --git a/nova/objects/resource_provider.py b/nova/objects/resource_provider.py
index 7ffbffef9cba..278f156445e6 100644
--- a/nova/objects/resource_provider.py
+++ b/nova/objects/resource_provider.py
@@ -2082,8 +2082,7 @@ class AllocationList(base.ObjectListBase, base.NovaObject):
                     resource_class_id=rc_id,
                     consumer_id=consumer_id,
                     used=alloc.used)
-            result = context.session.execute(ins_stmt)
-            alloc.id = result.lastrowid
+            context.session.execute(ins_stmt)
 
         # Generation checking happens here. If the inventory for this resource
         # provider changed out from under us, this will raise a
diff --git a/nova/tests/functional/db/test_resource_provider.py b/nova/tests/functional/db/test_resource_provider.py
index 2293b8a5180f..a12d5e5b8f21 100644
--- a/nova/tests/functional/db/test_resource_provider.py
+++ b/nova/tests/functional/db/test_resource_provider.py
@@ -1217,7 +1217,6 @@ class TestAllocation(ResourceProviderBaseCase):
                          disk_allocation.used)
         self.assertEqual(DISK_ALLOCATION['consumer_id'],
                          disk_allocation.consumer_id)
-        self.assertIsInstance(disk_allocation.id, int)
 
         allocations = rp_obj.AllocationList.get_all_by_resource_provider(
             self.ctx, resource_provider)
diff --git a/nova/tests/unit/objects/test_resource_provider.py b/nova/tests/unit/objects/test_resource_provider.py
index 15cf72899ee9..674124dbbac0 100644
--- a/nova/tests/unit/objects/test_resource_provider.py
+++ b/nova/tests/unit/objects/test_resource_provider.py
@@ -352,9 +352,13 @@ class TestAllocation(test_objects._LocalTest):
                                            used=8)
         alloc_list = resource_provider.AllocationList(self.context,
                                                       objects=[obj])
-        self.assertNotIn("id", obj)
         alloc_list.create_all()
-        self.assertIn("id", obj)
+
+        rp_al = resource_provider.AllocationList
+        saved_allocations = rp_al.get_all_by_resource_provider(
+            self.context, rp)
+        self.assertEqual(1, len(saved_allocations))
+        self.assertEqual(obj.used, saved_allocations[0].used)
 
     def test_create_with_id_fails(self):
         rp = resource_provider.ResourceProvider(context=self.context,