diff --git a/src/DGtal/kernel/ArithmeticConversionTraits.h b/src/DGtal/kernel/ArithmeticConversionTraits.h
index 84ec33f7f3..9f39c66196 100644
--- a/src/DGtal/kernel/ArithmeticConversionTraits.h
+++ b/src/DGtal/kernel/ArithmeticConversionTraits.h
@@ -44,7 +44,7 @@
 
 namespace DGtal
 {
-
+  
   /////////////////////////////////////////////////////////////////////////////
   // template class ArithmeticConversionTraits
   /**
@@ -92,23 +92,23 @@ namespace DGtal
   struct ArithmeticConversionTraits
   {
   };
-
+  
   /** @brief Specialization in order to remove const specifiers and references from given types
    *
    * @see ArithmeticConversionTraits
    */
   template <typename T, typename U>
   struct ArithmeticConversionTraits< T, U,
-      typename std::enable_if<
-           ! std::is_same< T, typename std::remove_cv< typename std::remove_reference<T>::type >::type >::value
-        || ! std::is_same< U, typename std::remove_cv< typename std::remove_reference<U>::type >::type >::value >::type >
-    : ArithmeticConversionTraits<
-        typename std::remove_cv< typename std::remove_reference<T>::type >::type,
-        typename std::remove_cv< typename std::remove_reference<U>::type >::type >
+  typename std::enable_if<
+  ! std::is_same< T, typename std::remove_cv< typename std::remove_reference<T>::type >::type >::value
+  || ! std::is_same< U, typename std::remove_cv< typename std::remove_reference<U>::type >::type >::value >::type >
+  : ArithmeticConversionTraits<
+  typename std::remove_cv< typename std::remove_reference<T>::type >::type,
+  typename std::remove_cv< typename std::remove_reference<U>::type >::type >
   {
   };
-
-
+  
+  
   /** @brief Specialization for (fundamental) arithmetic types.
    *
    * Resulting type is deduced from usual arithmetic conversion using
@@ -118,12 +118,12 @@ namespace DGtal
    */
   template <typename T, typename U>
   struct ArithmeticConversionTraits< T, U,
-      typename std::enable_if<    std::is_arithmetic<T>::value
-                               && std::is_arithmetic<U>::value >::type >
+  typename std::enable_if<    std::is_arithmetic<T>::value
+  && std::is_arithmetic<U>::value >::type >
   {
     using type = typename std::common_type<T, U>::type; //! Arithmetic operation result type.
   };
-
+  
   /** @brief Result type of arithmetic binary operators between two given types.
    *
    * @tparam T      First operand type.
@@ -133,7 +133,7 @@ namespace DGtal
    */
   template <typename T, typename U>
   using ArithmeticConversionType = typename ArithmeticConversionTraits<T, U>::type;
-
+  
   /** @brief Helper to determine if an arithmetic operation between two given
    *      types has a valid result type (ie is valid).
    *
@@ -143,10 +143,10 @@ namespace DGtal
    */
   template <typename T, typename U, typename Enable = void>
   struct IsArithmeticConversionValid
-    : std::false_type
+  : std::false_type
   {
   };
-
+  
   /** @brief Specialization when arithmetic operation between the two given
    *      type is valid.
    *
@@ -157,12 +157,12 @@ namespace DGtal
    */
   template <typename T, typename U>
   struct IsArithmeticConversionValid<T, U,
-      typename std::conditional<false, ArithmeticConversionType<T, U>, void>::type >
-    : std::true_type
+  typename std::conditional<false, ArithmeticConversionType<T, U>, void>::type >
+  : std::true_type
   {
   };
-
-
+  
+  
   /** @brief Call constructor for the result type of an arithmetic operation.
    *
    * @tparam LHS    First operand type.
@@ -174,20 +174,19 @@ namespace DGtal
    * @param args    Parameters forwarded to the constructor.
    */
   template <
-    typename LHS,
-    typename RHS,
-    typename... Args >
+  typename LHS,
+  typename RHS,
+  typename... Args >
   inline
   ArithmeticConversionType<LHS, RHS>
   constructFromArithmeticConversion( LHS const& lhs, RHS const& rhs, Args &&... args )
-    {
-      boost::ignore_unused_variable_warning(lhs);
-      boost::ignore_unused_variable_warning(rhs);
-
-      return ArithmeticConversionType<LHS, RHS>( std::forward<Args>(args)... );
-    }
-
-#ifdef WITH_BIGINTEGER
+  {
+    boost::ignore_unused_variable_warning(lhs);
+    boost::ignore_unused_variable_warning(rhs);
+    
+    return ArithmeticConversionType<LHS, RHS>( std::forward<Args>(args)... );
+  }
+  
 #ifdef WITH_GMP
   /** @brief Specialization when first operand is a @ref BigInteger.
    *
@@ -198,12 +197,12 @@ namespace DGtal
    */
   template <typename T, typename GMP1, typename GMP2>
   struct ArithmeticConversionTraits<T, __gmp_expr<GMP1, GMP2>,
-      typename std::enable_if< std::is_integral<T>::value >::type >
+  typename std::enable_if< std::is_integral<T>::value >::type >
   {
     using type = BigInteger;
   };
-
-  /** @brief Specialization when second operand is a @ref BigInteger.
+  
+  /** @brief Specialization when second operand is a @ref BigInteger with GMP.
    *
    * @warning result type if set to BigInteger instead of the possible
    *    more complex __gmp_expr.
@@ -212,11 +211,11 @@ namespace DGtal
    */
   template <typename GMP1, typename GMP2, typename U>
   struct ArithmeticConversionTraits<__gmp_expr<GMP1, GMP2>, U,
-      typename std::enable_if< std::is_integral<U>::value >::type >
+  typename std::enable_if< std::is_integral<U>::value >::type >
   {
     using type = BigInteger;
   };
-
+  
   /** @brief Specialization when both operands are @ref BigInteger.
    *
    * @warning result type if set to BigInteger instead of the possible
@@ -230,9 +229,10 @@ namespace DGtal
     using type = BigInteger;
   };
 #endif
-#endif
+  
 } // namespace DGtal
 
+
 #endif // !defined ArithmeticConversionTraits_h
 
 #undef ArithmeticConversionTraits_RECURSES
diff --git a/src/DGtal/kernel/PointVector.ih b/src/DGtal/kernel/PointVector.ih
index ab39cc4857..49d2a5bac8 100644
--- a/src/DGtal/kernel/PointVector.ih
+++ b/src/DGtal/kernel/PointVector.ih
@@ -35,7 +35,6 @@
 #include <cstdlib>
 #include <cmath>
 #include <DGtal/base/BasicFunctors.h>
-#include "DGtal/io/Color.h"
 //////////////////////////////////////////////////////////////////////////////
 
 
@@ -1042,7 +1041,13 @@ inline
 typename DGtal::PointVector<dim, double, std::array<double,dim> >
 DGtal::PointVector<dim, TComponent, TContainer>::getNormalized() const
 {
-  PointVector<dim,double,std::array<double,dim> > normalized =(*this);
+  // Orginal:   PointVector<dim,double,std::array<double,dim> > normalized(*this);
+  // Not workling too: PointVector<dim,double,std::array<double,dim> > normalized(*this,  [](const auto v){return NumberTraits<TComponent>::castToDouble(v);}););
+  PointVector<dim,double,std::array<double,dim> > normalized;
+  for ( DGtal::Dimension i = 0; i < dim; ++i )
+    normalized[i] = NumberTraits<TComponent>::castToDouble( this->operator[](i));
+  ///FIXME: HERE
+  ///TODO: HERE
   normalized /= normalized.norm();
   return normalized;
 }
diff --git a/tests/kernel/testInteger.cpp b/tests/kernel/testInteger.cpp
index f6991a2e90..fd8294d513 100644
--- a/tests/kernel/testInteger.cpp
+++ b/tests/kernel/testInteger.cpp
@@ -91,11 +91,20 @@ TEST_CASE( "Checking CInteger models")
   trace.info() << "  - digits unsigned int = " << NumberTraits<unsigned int>::digits()<< std::endl;
   trace.info() << "  - digits long int = " << NumberTraits<long int>::digits()<< std::endl;
   trace.endBlock();
+}
+
+TEST_CASE("DGal::BigInteger tests")
+{
+  trace.beginBlock ( "Checking CUnsignedInteger models ..." );
+  BOOST_CONCEPT_ASSERT(( concepts::CInteger<DGtal::BigInteger> ));
+  trace.endBlock();
   
+  DGtal::BigInteger big(425);
+  CHECK(big == (int)425);
   
-  int a = 42;
-  DGtal::BigInteger b(42);
-  CHECK(a == b);
+  DGtal::BigInteger anotherbig(5);
+  DGtal::BigInteger res = big + anotherbig;
+  CHECK(res == (int)430);
 }
 
 //                                                                           //