diff --git a/testdata/scad/bugs/issue541.scad b/testdata/scad/bugs/issue541.scad
index 4eca9db4..5af62ba8 100644
--- a/testdata/scad/bugs/issue541.scad
+++ b/testdata/scad/bugs/issue541.scad
@@ -3,5 +3,7 @@ CGAL::Polyhedron_incremental_builder_3<HDS>::
 lookup_halfedge(): input error: facet 81 shares a halfedge from vertex 61 to vertex 69 with facet 38.
 
 ERROR: CGAL NefPolyhedron->Polyhedron conversion failed.
+
+This has been fixed, but keep this test for future reference
 */
 render() import("issue541.stl");
diff --git a/tests/regression/opencsgtest/issue541-expected.png b/tests/regression/opencsgtest/issue541-expected.png
index 231e0168..6262a915 100644
Binary files a/tests/regression/opencsgtest/issue541-expected.png and b/tests/regression/opencsgtest/issue541-expected.png differ