diff --git a/src/bonsai/bonsai/bim/module/spatial/prop.py b/src/bonsai/bonsai/bim/module/spatial/prop.py
index 4f04f1bb48..ef91769928 100644
--- a/src/bonsai/bonsai/bim/module/spatial/prop.py
+++ b/src/bonsai/bonsai/bim/module/spatial/prop.py
@@ -119,7 +119,6 @@ class BIMSpatialDecompositionProperties(PropertyGroup):
     container_filter: StringProperty(name="Container Filter", default="", options={"TEXTEDIT_UPDATE"})
     containers: CollectionProperty(name="Containers", type=BIMContainer)
     contracted_containers: StringProperty(name="Contracted containers", default="[]")
-    expanded_containers: StringProperty(name="Expanded containers", default="[]")
     active_container_index: IntProperty(name="Active Container Index", update=update_active_container_index)
     element_filter: StringProperty(name="Element Filter", default="", options={"TEXTEDIT_UPDATE"})
     elements: CollectionProperty(name="Elements", type=Element)