diff --git a/Number_types/test/Number_types/Root_of_traits.cpp b/Number_types/test/Number_types/Root_of_traits.cpp
index 86d1ef54716..a9cb2f5c2a2 100644
--- a/Number_types/test/Number_types/Root_of_traits.cpp
+++ b/Number_types/test/Number_types/Root_of_traits.cpp
@@ -46,6 +46,7 @@ void test_root_of_traits_for_set(Integer, Rational, FWS){
 }
 
 int main(){
+    std::cout << "Testing with double" << std::endl;
     CGAL::Test::test_root_of_traits< double , double , double >();
    
     try{// just compile and try to get as far as you can go. 
@@ -56,6 +57,7 @@ int main(){
 #ifdef CGAL_HAS_GMP_ARITHMETIC_KERNEL
     //TODO: switch to Gmpq
     {
+      std::cout << "Testing with GMP" << std::endl;
       typedef CGAL::GMP_arithmetic_kernel AK; 
       typedef AK::Integer Integer;
       typedef AK::Rational Rational;
@@ -65,6 +67,7 @@ int main(){
 #endif
 #ifdef CGAL_HAS_LEDA_ARITHMETIC_KERNEL
     {
+      std::cout << "Testing with LEDA" << std::endl;
       typedef CGAL::LEDA_arithmetic_kernel AK; 
       typedef AK::Integer Integer;
       typedef AK::Rational Rational;
@@ -74,6 +77,7 @@ int main(){
 #endif
 #ifdef CGAL_HAS_CORE_ARITHMETIC_KERNEL
     {
+      std::cout << "Testing with CORE" << std::endl;
       typedef CGAL::CORE_arithmetic_kernel AK; 
       typedef AK::Integer Integer;
       typedef AK::Rational Rational;
@@ -82,6 +86,7 @@ int main(){
     }
 #endif
     {
+      std::cout << "Testing with MP_Float" << std::endl;
       typedef CGAL::MP_Float_arithmetic_kernel AK; 
       typedef AK::Integer Integer;
       typedef AK::Rational Rational;