diff --git a/websocket-sharp/Net/HttpUtility.cs b/websocket-sharp/Net/HttpUtility.cs
index ff242541..5b5790f1 100644
--- a/websocket-sharp/Net/HttpUtility.cs
+++ b/websocket-sharp/Net/HttpUtility.cs
@@ -1211,7 +1211,7 @@ namespace WebSocketSharp.Net
 
       var len = bytes.Length;
       return len > 0
-             ? InternalUrlDecodeToBytes (bytes, 0, len)
+             ? urlDecodeToBytes (bytes, 0, len)
              : bytes;
     }