diff --git a/test/unit/unittest_utils/galaxy_mock.py b/test/unit/unittest_utils/galaxy_mock.py
index 4b0b9a584f0..f26374cfc0a 100644
--- a/test/unit/unittest_utils/galaxy_mock.py
+++ b/test/unit/unittest_utils/galaxy_mock.py
@@ -70,6 +70,7 @@ class MockApp(object):
         self.init_datatypes()
         self.job_config = Bunch(
             dynamic_params=None,
+            destinations={}
         )
         self.tool_data_tables = {}
         self.dataset_collections_service = None