diff --git a/src/blenderbim/blenderbim/bim/module/void/ui.py b/src/blenderbim/blenderbim/bim/module/void/ui.py
index a1bac98af7..c17e1922ed 100644
--- a/src/blenderbim/blenderbim/bim/module/void/ui.py
+++ b/src/blenderbim/blenderbim/bim/module/void/ui.py
@@ -49,7 +49,11 @@ class BIM_PT_voids(Panel):
         if len(context.selected_objects) == 2:
             op = row.operator("bim.add_opening", icon="ADD", text="Add Opening")
             for obj in context.selected_objects:
-                if "IfcOpeningElement" in obj.name or not obj.BIMObjectProperties.ifc_definition_id:
+                if (
+                    "IfcOpeningElement" in obj.name
+                    or "IfcOpeningStandardCase" in obj.name
+                    or not obj.BIMObjectProperties.ifc_definition_id
+                ):
                     op.opening = obj.name
                 elif len(obj.children) == 1 and not obj.children[0].BIMObjectProperties.ifc_definition_id:
                     op.opening = obj.children[0].name