diff --git a/Packages/Arrangement/test/Arrangement_2/test.C b/Packages/Arrangement/test/Arrangement_2/test.C
index 7444d5721b1..58ec4235a47 100644
--- a/Packages/Arrangement/test/Arrangement_2/test.C
+++ b/Packages/Arrangement/test/Arrangement_2/test.C
@@ -32,7 +32,7 @@
 // PL flag enables the running of the test independently of cgal_make.)
 #ifndef CGAL_ARR_TEST_TRAITS
 //#define CGAL_ARR_TEST_TRAITS CGAL_SEGMENT_TRAITS
-//#define CGAL_ARR_TEST_TRAITS CGAL_SEGMENT_LEDA_TRAITS
+#define CGAL_ARR_TEST_TRAITS CGAL_SEGMENT_LEDA_TRAITS
 //#define CGAL_ARR_TEST_TRAITS CGAL_POLYLINE_TRAITS
 //#define CGAL_ARR_TEST_TRAITS CGAL_POLYLINE_LEDA_TRAITS
 //#define CGAL_ARR_TEST_TRAITS CGAL_SEGMENT_CIRCLE_TRAITS