diff --git a/src/core/include/pw/core/vector.hpp b/src/core/include/pw/core/vector.hpp
index 39192cc..73b494c 100644
--- a/src/core/include/pw/core/vector.hpp
+++ b/src/core/include/pw/core/vector.hpp
@@ -63,6 +63,7 @@ struct vector3_ : matrix_<3,1,T>  {
     vector3_() : base_type() {}
     vector3_(const base_type& m) : base_type(m) {}
     vector3_(T x_,T y_,T z_) : base_type({x_,y_,z_}) {}
+	vector3_(const vector2_<T> &m, T w) : base_type({m(0),m(1),w}) {}
 
     inline const T& x() const { return (*this)[0]; }
     inline T& x() { return (*this)[0]; }
@@ -99,8 +100,6 @@ struct vector3_ : matrix_<3,1,T>  {
     inline static vector3_<T> x_axis() { return vector3_<T> ( { T(1), T(0), T(0) } ); }
     inline static vector3_<T> y_axis() { return vector3_<T> ( { T(0), T(1), T(0) } ); }
     inline static vector3_<T> z_axis() { return vector3_<T> ( { T(0), T(0), T(1) } ); }
-
-
 };
 
 template <typename T>
@@ -113,6 +112,7 @@ struct vector4_ : matrix_<4,1,T>  {
 
     vector4_(T x_,T y_,T z_,T w_) : base_type({x_,y_,z_,w_}) {}
     vector4_(const base_type& m) : base_type(m) {}
+	vector4_(const vector3_<T> &m, T w) : base_type({m(0),m(1),m(2),w}) {}
 
 	inline const T& x() const { return (*this)[0]; }
 	inline T& x() { return (*this)[0]; }