From b777c12b530ef50dd801ecf362dc89d18d143db9 Mon Sep 17 00:00:00 2001
From: Yorik van Havre <yorik@uncreated.net>
Date: Tue, 16 May 2023 15:25:53 +0200
Subject: [PATCH] Arch: Minor fix to IFC exporter

---
 src/Mod/Arch/ArchComponent.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Arch/ArchComponent.py b/src/Mod/Arch/ArchComponent.py
index 5ca3f36651..7b29c76298 100644
--- a/src/Mod/Arch/ArchComponent.py
+++ b/src/Mod/Arch/ArchComponent.py
@@ -543,7 +543,7 @@ class Component(ArchIFC.IfcProduct):
 
             # the base is a Part Extrusion
             elif obj.Base.isDerivedFrom("Part::Extrusion"):
-                if obj.Base.Base:
+                if obj.Base.Base and len(obj.Base.Base.Shape.Wires) == 1:
                     base,placement = self.rebase(obj.Base.Base.Shape)
                     extrusion = FreeCAD.Vector(obj.Base.Dir).normalize()
                     if extrusion.Length == 0: