diff --git a/src/ifcopenshell-python/ifcopenshell/api/void/add_opening.py b/src/ifcopenshell-python/ifcopenshell/api/void/add_opening.py
index 8e0a53f613..09e8e6e313 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/void/add_opening.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/void/add_opening.py
@@ -18,6 +18,7 @@
 
 import ifcopenshell
 import ifcopenshell.api
+import ifcopenshell.util.placement
 
 
 class Usecase: