diff --git a/tests/Settings/TestExtruderStack.py b/tests/Settings/TestExtruderStack.py
index 6360f2e313..db26e693a6 100644
--- a/tests/Settings/TestExtruderStack.py
+++ b/tests/Settings/TestExtruderStack.py
@@ -321,15 +321,10 @@ def test_setDefinitionByIdDoesntExist(extruder_stack):
         extruder_stack.setDefinitionById("some_definition") #Container registry is empty now.
 
 ##  Tests setting materials by specifying an ID of a material that exists.
-@pytest.mark.skip
 def test_setMaterialByIdExists(extruder_stack, container_registry):
-    original_container_registry = UM.Settings.ContainerStack._containerRegistry
-    UM.Settings.ContainerStack._containerRegistry = container_registry #Always has all the profiles you ask of.
-
-    extruder_stack.setMaterialById("some_material") #The container registry always has a container with the ID.
-
-    #Restore.
-    UM.Settings.ContainerStack._containerRegistry = original_container_registry
+    container_registry.return_value = getInstanceContainer(container_type = "material")
+    extruder_stack.setMaterialById("InstanceContainer")
+    assert extruder_stack.material.getId() == "InstanceContainer"
 
 ##  Tests setting materials by specifying an ID of a material that doesn't
 #   exist.