diff --git a/tests/functional/openlp_core_lib/test_lib.py b/tests/functional/openlp_core_lib/test_lib.py
index 5e2bd187b..80e0e35f3 100644
--- a/tests/functional/openlp_core_lib/test_lib.py
+++ b/tests/functional/openlp_core_lib/test_lib.py
@@ -70,7 +70,7 @@ class TestLib(TestCase):
         false_result = str_to_bool(false_boolean)
 
         # THEN: We should get back a True bool
-        self.assertIsinstance(false_result, bool, 'The result should be a boolean')
+        self.assertIsInstance(false_result, bool, 'The result should be a boolean')
         self.assertFalse(false_result, 'The result should be True')
 
     def str_to_bool_with_integer_test(self):
diff --git a/tests/functional/openlp_core_lib/test_serviceitem.py b/tests/functional/openlp_core_lib/test_serviceitem.py
index 0e1b150ae..fda471428 100644
--- a/tests/functional/openlp_core_lib/test_serviceitem.py
+++ b/tests/functional/openlp_core_lib/test_serviceitem.py
@@ -81,7 +81,7 @@ class TestServiceItem(TestCase):
         service_item.add_icon = MagicMock()
 
         # WHEN: We add a custom from a saved service
-        line = convert_file_service_item('serviceitem_custom_1.osj')
+        line = convert_file_service_item(TEST_PATH, 'serviceitem_custom_1.osj')
         service_item.set_from_service(line)
 
         # THEN: We should get back a valid service item