diff --git a/src/Vector3.h b/src/Vector3.h
index 2c79f9ff1..4a1440b32 100644
--- a/src/Vector3.h
+++ b/src/Vector3.h
@@ -163,8 +163,16 @@ public:
 		z *= a_v;
 	}
 
-	// tolua_begin
+	template <typename T2> inline Vector3<T> & operator =(const Vector3<T2> & a_Rhs)
+	{
+		x = (T)a_Rhs.x;
+		y = (T)a_Rhs.y;
+		z = (T)a_Rhs.z;
+		return *this;
+	}
 
+	// tolua_begin
+	
 	inline Vector3<T> operator + (const Vector3<T>& a_Rhs) const
 	{
 		return Vector3<T>(