diff --git a/plugins/SimulationView/SimulationView.py b/plugins/SimulationView/SimulationView.py
index 5c3dca9fae..456d64e250 100644
--- a/plugins/SimulationView/SimulationView.py
+++ b/plugins/SimulationView/SimulationView.py
@@ -158,7 +158,9 @@ class SimulationView(View):
         return self._nozzle_node
 
     def _onSceneChanged(self, node):
-        if node.getMeshData() is not None:
+        if node.getMeshData() is None:
+            self.resetLayerData()
+        else:
             self.setActivity(False)
             self.calculateMaxLayers()
             self.calculateMaxPathsOnLayer(self._current_layer_num)