diff --git a/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_cls_triangulation_2.C b/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_cls_triangulation_2.C
index 983926daa16..bd263732f46 100644
--- a/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_cls_triangulation_2.C
+++ b/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_cls_triangulation_2.C
@@ -637,7 +637,7 @@ _test_cls_triangulation_2( const Triangulation & )
   assert(T2_8.number_of_vertices()>=2);
   assert(T2_8.is_valid());
   //fc= T2_8.line_walk(Point(0.5,0.4),Point(5,5));
-  fc= T2_8.line_walk(Point(25,20,5),Point(5,5));
+  fc= T2_8.line_walk(Point(5,4,10),Point(5,5));
   fc2=fc;
   n=0;
   assert(fc==fc2);
diff --git a/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_short_names_2.h b/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_short_names_2.h
index 3ebf6bc75e6..eda8638fc4e 100644
--- a/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_short_names_2.h
+++ b/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_short_names_2.h
@@ -4,9 +4,10 @@
 
 // Define shorter names to please linker (g++/egcs)
 
-   #define Cartesian Cart
-   #define Homogeneous Hom
+   #define Cartesian Ct
+   #define Homogeneous Hg
    #define Quotient Qt
+   #define Filtered_exact Fe
 
    #define Triangulation_test_point Ttp
    #define Triangulation_test_segment Tts
diff --git a/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_types.h b/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_types.h
index eec4b840f29..7b0c08d3751 100644
--- a/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_types.h
+++ b/Packages/Triangulation_2/test/Triangulation_2/include/CGAL/_test_types.h
@@ -11,6 +11,9 @@
 #ifndef CGAL_GMPZ_H
 #include <CGAL/Gmpz.h>
 #endif // CGAL::GMPZ
+#include <CGAL/Quotient.h>
+#include<CGAL/Arithmetic_filter.h>
+
 #ifndef CGAL_CARTESIAN_H
 #include <CGAL/Cartesian.h>
 #endif // CGAL_CARTESIAN_H
@@ -19,8 +22,11 @@
 #endif // CGAL_HOMOGENEOUS_H
 
 
-
-typedef CGAL::Cartesian<CGAL::Quotient<CGAL::Gmpz> > Test_rep_cartesian;
+typedef CGAL::Quotient<CGAL::Gmpz> CT;
+typedef CGAL::Quotient<CGAL::Gmpz> ET;
+//typedef CGAL::Filtered_exact<CT,ET> coord_type;
+typedef CGAL::Quotient<CGAL::Gmpz> coord_type;
+typedef CGAL::Cartesian<coord_type> Test_rep_cartesian;
 //typedef CGAL::Cartesian<CGAL::Gmpz>  Test_rep_cartesian;
 typedef CGAL::Homogeneous<CGAL::Gmpz> Test_rep_homogeneous;