diff --git a/websocket-sharp/Net/ChunkStream.cs b/websocket-sharp/Net/ChunkStream.cs
index 8515764d..18aaef41 100644
--- a/websocket-sharp/Net/ChunkStream.cs
+++ b/websocket-sharp/Net/ChunkStream.cs
@@ -184,11 +184,11 @@ namespace WebSocketSharp.Net
 
         if (!_gotIt)
           _saved.Append ((char) b);
-
-        if (_saved.Length > 20)
-          throwProtocolViolation ("The chunk size is too long.");
       }
 
+      if (_saved.Length > 20)
+        throwProtocolViolation ("The chunk size is too long.");
+
       if (!_sawCr || b != 10)
         return InputChunkState.None;