diff --git a/src/examples/IfcOpenHouse.cpp b/src/examples/IfcOpenHouse.cpp
index 7bac6dff70..3f6d56236d 100644
--- a/src/examples/IfcOpenHouse.cpp
+++ b/src/examples/IfcOpenHouse.cpp
@@ -338,7 +338,7 @@ int main() {
 		null, 
 		null,
 #ifdef USE_IFC4
-		file.instances_by_type<IfcSchema::IfcWallStandardCase>()->generalize(),
+		file.instances_by_type<IfcSchema::IfcWallStandardCase>()->as<IfcSchema::IfcDefinitionSelect>(),
 #else
 		file.instances_by_type<IfcSchema::IfcWallStandardCase>()->as<IfcSchema::IfcRoot>(),
 #endif