diff --git a/alib2std/src/extensions/linear_set.hpp b/alib2std/src/extensions/linear_set.hpp
index 7dc35cc5b6ada736011c639405e6fc127f705d9b..e3bdbba3e99184e47c32f2b63e2b6d9cb7c76634 100644
--- a/alib2std/src/extensions/linear_set.hpp
+++ b/alib2std/src/extensions/linear_set.hpp
@@ -544,8 +544,7 @@ public:
 	 * \param il the source of values represented by initializer list
 	 */
 	void insert (std::initializer_list<T> il) {
-		m_data.insert ( m_data.end ( ), std::move ( il ) );
-		sort_unique ( );
+		insert ( il.begin ( ), il.end ( ) );
 	}
 
 	/**