diff --git a/websocket-sharp/Ext.cs b/websocket-sharp/Ext.cs
index c6c29113..5b930020 100644
--- a/websocket-sharp/Ext.cs
+++ b/websocket-sharp/Ext.cs
@@ -69,6 +69,12 @@ namespace WebSocketSharp
 
     #endregion
 
+    #region Internal Fields
+
+    internal static readonly byte[] EmptyByteArray = new byte[0];
+
+    #endregion
+
     #region Private Methods
 
     private static byte[] compress (this byte[] data)
@@ -670,13 +676,13 @@ namespace WebSocketSharp
             try {
               var len = stream.EndRead (ar);
               bytes = len < 1
-                      ? new byte[0]
+                      ? EmptyByteArray
                       : len < length
                         ? stream.readBytes (buff, len, length - len)
                         : buff;
             }
             catch {
-              bytes = new byte[0];
+              bytes = EmptyByteArray;
             }
 
             if (completed != null)
@@ -1657,7 +1663,7 @@ namespace WebSocketSharp
                                     ? BitConverter.GetBytes ((UInt32)(object) value)
                                     : type == typeof (UInt64)
                                       ? BitConverter.GetBytes ((UInt64)(object) value)
-                                      : new byte[0];
+                                      : EmptyByteArray;
 
       if (bytes.Length > 1 && !order.IsHostOrder ())
         Array.Reverse (bytes);