diff --git a/src/bonsai/bonsai/bim/module/geometry/operator.py b/src/bonsai/bonsai/bim/module/geometry/operator.py
index 824711d780..394439839c 100644
--- a/src/bonsai/bonsai/bim/module/geometry/operator.py
+++ b/src/bonsai/bonsai/bim/module/geometry/operator.py
@@ -736,7 +736,7 @@ class OverrideDelete(bpy.types.Operator):
                 bpy.data.objects.remove(obj)
 
         for opening in context.scene.BIMModelProperties.openings:
-            if not tool.Ifc.get_entity(opening.obj):
+            if opening.obj is not None and not tool.Ifc.get_entity(opening.obj):
                 bpy.data.objects.remove(opening.obj)
         tool.Model.purge_scene_openings()