diff --git a/src/tz/core/data/vector.hpp b/src/tz/core/data/vector.hpp
index c44ba075a6..207722c2f4 100644
--- a/src/tz/core/data/vector.hpp
+++ b/src/tz/core/data/vector.hpp
@@ -183,7 +183,7 @@ namespace tz
 		 * @param end Value to be appended to the end of the resultant vector.
 		 * @return vector with extra element appended.
 		 */
-		vector<T, S + 1> with_more(T&& end) const;
+		vector<T, S + 1> with_more(T end) const;
 		/**
 		 * Create a new vector, with another vector appended to the end.
 		 *
diff --git a/src/tz/core/data/vector.inl b/src/tz/core/data/vector.inl
index 74036d6006..a1c82c5912 100644
--- a/src/tz/core/data/vector.inl
+++ b/src/tz/core/data/vector.inl
@@ -201,7 +201,7 @@ namespace tz
 	}
 
 	template<tz::number T, std::size_t S>
-	vector<T, S + 1> vector<T, S>::with_more(T&& end) const
+	vector<T, S + 1> vector<T, S>::with_more(T end) const
 	{
 		std::array<T, S + 1> new_data;
 		std::copy(this->vec.begin(), this->vec.end(), new_data.begin());