diff --git a/cura/Settings/MachineManager.py b/cura/Settings/MachineManager.py
index e39c150caa..09d9fc67b3 100755
--- a/cura/Settings/MachineManager.py
+++ b/cura/Settings/MachineManager.py
@@ -231,13 +231,11 @@ class MachineManager(QObject):
                 extruder_stack.containersChanged.disconnect(self._onInstanceContainersChanged)
 
         # Update the local global container stack reference
-        old_global_container_stack = self._global_container_stack
         self._global_container_stack = Application.getInstance().getGlobalContainerStack()
         if self._global_container_stack:
             self.updateDefaultExtruder()
             self.updateNumberExtrudersEnabled()
-        if old_global_container_stack != self._global_container_stack:
-            self.globalContainerChanged.emit()
+        self.globalContainerChanged.emit()
 
         # after switching the global stack we reconnect all the signals and set the variant and material references
         if self._global_container_stack: