diff --git a/cura/Machines/ContainerTree.py b/cura/Machines/ContainerTree.py
index eb2ed7d159..12a77083c4 100644
--- a/cura/Machines/ContainerTree.py
+++ b/cura/Machines/ContainerTree.py
@@ -53,9 +53,9 @@ class ContainerTree:
         global_stack = cura.CuraApplication.CuraApplication.getInstance().getGlobalContainerStack()
         if global_stack is None:
             return {}
-        variant_names = [extruder.variant.getName() for extruder in global_stack.extruders.values()]
-        material_bases = [extruder.material.getMetaDataEntry("base_file") for extruder in global_stack.extruders.values()]
-        extruder_enabled = [extruder.isEnabled for extruder in global_stack.extruders.values()]
+        variant_names = [extruder.variant.getName() for extruder in global_stack.extrudersList]
+        material_bases = [extruder.material.getMetaDataEntry("base_file") for extruder in global_stack.extrudersList]
+        extruder_enabled = [extruder.isEnabled for extruder in global_stack.extrudersList]
         return self.machines[global_stack.definition.getId()].getQualityGroups(variant_names, material_bases, extruder_enabled)
 
     ##  Get the quality changes groups available for the currently activated
diff --git a/tests/Machines/TestContainerTree.py b/tests/Machines/TestContainerTree.py
index e82ce2384d..ed54774acd 100644
--- a/tests/Machines/TestContainerTree.py
+++ b/tests/Machines/TestContainerTree.py
@@ -19,8 +19,8 @@ def createMockedStack(definition_id: str):
     extruder_right_mock.variant.getName = MagicMock(return_value = definition_id + "_right_variant_name")
     extruder_right_mock.material.getMetaDataEntry = MagicMock(return_value = definition_id + "_right_material_base_file")
     extruder_right_mock.isEnabled = True
-    extruder_dict = {"1": extruder_right_mock, "0": extruder_left_mock}
-    result.extruders = extruder_dict
+    extruder_list = [extruder_left_mock, extruder_right_mock]
+    result.extrudersList = extruder_list
     return result