diff --git a/plugins/CuraEngineBackend/CuraEngineBackend.py b/plugins/CuraEngineBackend/CuraEngineBackend.py
index 82815bccb7..c871d35ea7 100644
--- a/plugins/CuraEngineBackend/CuraEngineBackend.py
+++ b/plugins/CuraEngineBackend/CuraEngineBackend.py
@@ -386,5 +386,4 @@ class CuraEngineBackend(Backend):
         self._active_extruder_stack = ExtruderManager.getInstance().getActiveExtruderStack()
         if self._active_extruder_stack:
             self._active_extruder_stack.propertyChanged.connect(self._onSettingChanged)  # Note: Only starts slicing when the value changed.
-            self._active_extruder_stack.containersChanged.connect(self._onChanged)
-            self._onChanged()
\ No newline at end of file
+            self._active_extruder_stack.containersChanged.connect(self._onChanged)
\ No newline at end of file