diff --git a/src/Vectors.h b/src/Vectors.h
index e9c5a5b..db563ab 100644
--- a/src/Vectors.h
+++ b/src/Vectors.h
@@ -29,10 +29,12 @@ struct CoordinatesVector
         return sqrt(sum_of_squares);
     }
 
-    // Use SFINAE to allow normalization of floating point
+    // Use SFINAE to allow normalization of floating point.
+    // The template argument is used to force substitution and thus checking the enable_if.
     /// Normalizes the vector using its euclidean norm.
     /// \return Nothing, the vector is normalized in-place.
-    typename std::enable_if<std::is_floating_point<T>::value,void>::type
+    template <typename U = T>
+    typename std::enable_if<std::is_floating_point<U>::value,void>::type
     normalize()
     {
         double norm = magnitude();
@@ -104,6 +106,11 @@ struct Vec2 : public CoordinatesVector<T,2>
 
     Vec2() = default;
 
+    Vec2(const Vec2<T>& original): x(CoordinatesVector<T,2>::coordinates[0]), y(CoordinatesVector<T,2>::coordinates[1])
+    {
+        std::copy(std::begin(original.coordinates), std::end(original.coordinates), std::begin(CoordinatesVector<T,2>::coordinates));
+    }
+
     // Cast-copy constructor in order to use the operators of the mother class.
     Vec2(const CoordinatesVector<T,2>& origin)
     {
@@ -133,12 +140,17 @@ struct Vec3 : CoordinatesVector<T,3>
 
     Vec3() = default;
 
-    // Cast-copy constructor in order to use the operators of the mother class.
-    Vec3(const CoordinatesVector<T,3>& origin)
+    Vec3(const Vec3<T>& original): x(CoordinatesVector<T,3>::coordinates[0]), y(CoordinatesVector<T,3>::coordinates[1]), z(CoordinatesVector<T,3>::coordinates[2])
     {
-        if (this != &origin)
+        std::copy(std::begin(original.coordinates), std::end(original.coordinates), std::begin(CoordinatesVector<T,3>::coordinates));
+    }
+
+    // Cast-copy constructor in order to use the operators of the mother class.
+    Vec3(const CoordinatesVector<T,3>& original)
+    {
+        if (this != &original)
         {
-            std::copy(std::begin(origin.coordinates),std::end(origin.coordinates),std::begin(CoordinatesVector<T,2>::coordinates));
+            std::copy(std::begin(original.coordinates), std::end(original.coordinates), std::begin(CoordinatesVector<T,2>::coordinates));
         }
     }