diff --git a/tests/Machines/TestMaterialNode.py b/tests/Machines/TestMaterialNode.py
index f9ea0e3622..1073e97734 100644
--- a/tests/Machines/TestMaterialNode.py
+++ b/tests/Machines/TestMaterialNode.py
@@ -44,7 +44,7 @@ def getInstanceContainerSideEffect(*args, **kwargs):
 def container_registry():
     result = MagicMock()
     result.findInstanceContainersMetadata = MagicMock(side_effect=getInstanceContainerSideEffect)
-    result.findContainersMetadata = MagicMock(return_value = [{"base_file": "material_1"}])
+    result.findContainersMetadata = MagicMock(return_value = [{"base_file": "material_1", "material": "test_material_type", "GUID": "omg zomg"}])
     return result