diff --git a/cura/Settings/MachineManager.py b/cura/Settings/MachineManager.py
index 187c5ef04d..fe4e979735 100755
--- a/cura/Settings/MachineManager.py
+++ b/cura/Settings/MachineManager.py
@@ -337,7 +337,7 @@ class MachineManager(QObject):
         # that situation will be fixed (and not occur again, since it switches it out to the preferred variant or
         # variant instead!)
         machine_node = ContainerTree.getInstance().machines[global_stack.definition.getId()]
-        for extruder in self._global_container_stack.extruderList:
+        for extruder in global_stack.extruderList:
             variant_name = extruder.variant.getName()
             variant_node = machine_node.variants.get(variant_name)
             if variant_node is None: