diff --git a/ProcessSlicedObjectListJob.py b/ProcessSlicedObjectListJob.py
index 7cb5fa6760..c0b98f4482 100644
--- a/ProcessSlicedObjectListJob.py
+++ b/ProcessSlicedObjectListJob.py
@@ -40,3 +40,4 @@ class ProcessSlicedObjectListJob(Job):
                     layerData.addPolygon(layer.id, polygon.type, points)
 
             mesh.layerData = layerData
+            objectIdMap[object.id].meshDataChanged.emit()