diff --git a/src/ifcgeom/taxonomy.h b/src/ifcgeom/taxonomy.h
index d2eae3813a..8232f021d2 100644
--- a/src/ifcgeom/taxonomy.h
+++ b/src/ifcgeom/taxonomy.h
@@ -1307,6 +1307,12 @@ typedef item const* ptr;
 						return upg;
 					}
 				}
+				{
+					curve_to_loop_upgrade<T> upg(u);
+					if (upg) {
+						return upg;
+					}
+				}
 				{
 					curve_to_face_upgrade<T> upg(u);
 					if (upg) {