diff --git a/src/ifcgeom/schema_agnostic/IfcGeomIterator.h b/src/ifcgeom/schema_agnostic/IfcGeomIterator.h
index dc9014023c..2a9420c426 100644
--- a/src/ifcgeom/schema_agnostic/IfcGeomIterator.h
+++ b/src/ifcgeom/schema_agnostic/IfcGeomIterator.h
@@ -622,7 +622,7 @@ namespace ifcopenshell { namespace geometry {
 				delete ifc_file;
 			}
 
-			if (settings_.get(settings::DISABLE_TRIANGULATION)) {
+			if (!settings_.get(settings::DISABLE_TRIANGULATION)) {
 				for (auto& p : all_processed_native_elements_) {
 					delete p;
 				}