diff --git a/karbor/tests/fullstack/karbor_objects.py b/karbor/tests/fullstack/karbor_objects.py
index 5073865f..2b2f8f6e 100644
--- a/karbor/tests/fullstack/karbor_objects.py
+++ b/karbor/tests/fullstack/karbor_objects.py
@@ -273,8 +273,8 @@ class Server(object):
 
     def _volume_attached(self, volume_id):
         volume_item = self.cinder_client.volumes.get(volume_id)
-        server_attachments = filter(lambda x: x['server_id'] == self.id,
-                                    volume_item.attachments)
+        server_attachments = list(filter(lambda x: x['server_id'] == self.id,
+                                         volume_item.attachments))
         if len(server_attachments) > 0:
             return True
         else:
@@ -287,8 +287,8 @@ class Server(object):
 
     def _volume_detached(self, volume_id):
         volume_item = self.cinder_client.volumes.get(volume_id)
-        server_attachments = filter(lambda x: x['server_id'] == self.id,
-                                    volume_item.attachments)
+        server_attachments = list(filter(lambda x: x['server_id'] == self.id,
+                                         volume_item.attachments))
         if len(server_attachments) > 0:
             return False
         else:
diff --git a/karbor/tests/fullstack/test_scheduled_operations.py b/karbor/tests/fullstack/test_scheduled_operations.py
index 72a8e286..289cc9e1 100644
--- a/karbor/tests/fullstack/test_scheduled_operations.py
+++ b/karbor/tests/fullstack/test_scheduled_operations.py
@@ -127,7 +127,7 @@ class ScheduledOperationsTest(karbor_base.KarborBaseTest):
         operation_item = self.karbor_client.scheduled_operations.get(
             operation.id)
         plan_id = operation_item.operation_definition["plan_id"]
-        cps = filter(lambda x: x.protection_plan["id"] == plan_id, items)
+        cps = list(filter(lambda x: x.protection_plan["id"] == plan_id, items))
         self.assertEqual(freq, len(cps))
 
         for cp in cps: