diff --git a/HoistingCrane/HoistingCrane/MapsCollection.cs b/HoistingCrane/HoistingCrane/MapsCollection.cs
index b969ba2..24db11d 100644
--- a/HoistingCrane/HoistingCrane/MapsCollection.cs
+++ b/HoistingCrane/HoistingCrane/MapsCollection.cs
@@ -12,6 +12,8 @@ namespace HoistingCrane
         /// Словарь (хранилище) с картами
 
         readonly Dictionary<string, MapWithSetHoistingCraneGeneric<DrawingObjectHoistingCrane, AbstractMap>> _mapStorages;
+        /// </summary>
+        readonly Dictionary<string, MapWithSetHoistingCraneGeneric<IDrawingObject, AbstractMap>> _mapStorages;
         /// <summary>
         /// Возвращение списка названий карт
         /// </summary>