diff --git a/Sharp7.Rx/Sharp7Plc.cs b/Sharp7.Rx/Sharp7Plc.cs
index bc98040..b6de5ea 100644
--- a/Sharp7.Rx/Sharp7Plc.cs
+++ b/Sharp7.Rx/Sharp7Plc.cs
@@ -192,7 +192,7 @@ public class Sharp7Plc : IPlc
             }
             finally
             {
-                ArrayPool<byte>.Shared.Return(buffer);
+                arrayPool.Return(buffer);
             }
         }
     }