diff --git a/SystemExtensions/Collections/CircularQueue.cs b/SystemExtensions/Collections/CircularQueue.cs
index 2289a83..e72a999 100644
--- a/SystemExtensions/Collections/CircularQueue.cs
+++ b/SystemExtensions/Collections/CircularQueue.cs
@@ -30,7 +30,8 @@ namespace SystemExtensions.Collections
         public int Capacity { get => capacity;
             set
             {
-
+                capacity = value;
+                throw new NotImplementedException();
             }
         }
         #endregion