diff --git a/src/vector.hpp b/src/vector.hpp
index 87ae4f8..f095ac4 100644
--- a/src/vector.hpp
+++ b/src/vector.hpp
@@ -49,13 +49,13 @@ namespace cloonel {
 	};
 
 	template <typename T, typename U, uint32_t S>
-	Vector<typename std::common_type<T, U>::type, S> operator+ ( const Vector<T, S>& parA, const Vector<U, S>& parB ) __attribute__((pure));
+	Vector<typename std::common_type<T, U>::type, S> operator+ ( Vector<T, S> parA, const Vector<U, S>& parB ) __attribute__((pure));
 	template <typename T, typename U, uint32_t S>
-	Vector<typename std::common_type<T, U>::type, S> operator- ( const Vector<T, S>& parA, const Vector<U, S>& parB ) __attribute__((pure));
+	Vector<typename std::common_type<T, U>::type, S> operator- ( Vector<T, S> parA, const Vector<U, S>& parB ) __attribute__((pure));
 	template <typename T, typename U, uint32_t S>
-	Vector<typename std::common_type<T, U>::type, S> operator* ( const Vector<T, S>& parA, const Vector<U, S>& parB ) __attribute__((pure));
+	Vector<typename std::common_type<T, U>::type, S> operator* ( Vector<T, S> parA, const Vector<U, S>& parB ) __attribute__((pure));
 	template <typename T, typename U, uint32_t S>
-	Vector<typename std::common_type<T, U>::type, S> operator/ ( const Vector<T, S>& parA, const Vector<U, S>& parB ) __attribute__((pure));
+	Vector<typename std::common_type<T, U>::type, S> operator/ ( Vector<T, S> parA, const Vector<U, S>& parB ) __attribute__((pure));
 	template <typename T, typename U, uint32_t S>
 	Vector<typename std::common_type<T, U>::type, S> operator+ ( U parA, const Vector<U, S>& parB ) __attribute__((pure));
 	template <typename T, typename U, uint32_t S>
diff --git a/src/vector.inl b/src/vector.inl
index a6b010e..c6ec36c 100644
--- a/src/vector.inl
+++ b/src/vector.inl
@@ -91,35 +91,27 @@ namespace cloonel {
 	///-------------------------------------------------------------------------
 	template <typename T, typename U, uint32_t S>
 	inline
-	Vector<typename std::common_type<T, U>::type, S> operator+ (const Vector<T, S>& parA, const Vector<U, S>& parB) {
-		typedef typename std::common_type<T, U>::type RetType;
-		Vector<RetType, S> retVal(parA);
+	Vector<typename std::common_type<T, U>::type, S> operator+ (Vector<T, S> parA, const Vector<U, S>& parB) {
 		parA += parB;
-		return retVal;
+		return parA;
 	}
 	template <typename T, typename U, uint32_t S>
 	inline
-	Vector<typename std::common_type<T, U>::type, S> operator- (const Vector<T, S>& parA, const Vector<U, S>& parB) {
-		typedef typename std::common_type<T, U>::type RetType;
-		Vector<RetType, S> retVal(parA);
+	Vector<typename std::common_type<T, U>::type, S> operator- (Vector<T, S> parA, const Vector<U, S>& parB) {
 		parA -= parB;
-		return retVal;
+		return parA;
 	}
 	template <typename T, typename U, uint32_t S>
 	inline
-	Vector<typename std::common_type<T, U>::type, S> operator* (const Vector<T, S>& parA, const Vector<U, S>& parB) {
-		typedef typename std::common_type<T, U>::type RetType;
-		Vector<RetType, S> retVal(parA);
+	Vector<typename std::common_type<T, U>::type, S> operator* (Vector<T, S> parA, const Vector<U, S>& parB) {
 		parA *= parB;
-		return retVal;
+		return parA;
 	}
 	template <typename T, typename U, uint32_t S>
 	inline
-	Vector<typename std::common_type<T, U>::type, S> operator/ (const Vector<T, S>& parA, const Vector<U, S>& parB) {
-		typedef typename std::common_type<T, U>::type RetType;
-		Vector<RetType, S> retVal(parA);
+	Vector<typename std::common_type<T, U>::type, S> operator/ (Vector<T, S> parA, const Vector<U, S>& parB) {
 		parA /= parB;
-		return retVal;
+		return parA;
 	}
 
 	///-------------------------------------------------------------------------