diff --git a/Source/Bind/Structures/Parameter.cs b/Source/Bind/Structures/Parameter.cs
index 94ccae49..762812a4 100644
--- a/Source/Bind/Structures/Parameter.cs
+++ b/Source/Bind/Structures/Parameter.cs
@@ -45,6 +45,7 @@ namespace Bind.Structures
             Generic = p.Generic;
             Flow = p.Flow;
             cache = p.cache;
+            ComputeSize = p.ComputeSize;
             //this.rebuild = false;
         }