diff --git a/websocket-sharp/Net/HttpUtility.cs b/websocket-sharp/Net/HttpUtility.cs
index cac7fc49..3f5b4d68 100644
--- a/websocket-sharp/Net/HttpUtility.cs
+++ b/websocket-sharp/Net/HttpUtility.cs
@@ -588,47 +588,6 @@ namespace WebSocketSharp.Net
       }
     }
 
-    private static void urlEncodeUnicode (char c, Stream output)
-    {
-      if (c > 31 && c < 127) {
-        if (c == ' ') {
-          output.WriteByte ((byte) '+');
-          return;
-        }
-
-        if (isNumeric (c)) {
-          output.WriteByte ((byte) c);
-          return;
-        }
-
-        if (isAlphabet (c)) {
-          output.WriteByte ((byte) c);
-          return;
-        }
-
-        if (isUnreserved (c)) {
-          output.WriteByte ((byte) c);
-          return;
-        }
-      }
-
-      output.WriteByte ((byte) '%');
-      output.WriteByte ((byte) 'u');
-
-      var i = (int) c;
-      var idx = i >> 12;
-      output.WriteByte ((byte) _hexChars[idx]);
-
-      idx = (i >> 8) & 0x0F;
-      output.WriteByte ((byte) _hexChars[idx]);
-
-      idx = (i >> 4) & 0x0F;
-      output.WriteByte ((byte) _hexChars[idx]);
-
-      idx = i & 0x0F;
-      output.WriteByte ((byte) _hexChars[idx]);
-    }
-
     private static void urlPathEncode (char c, StringBuilder output)
     {
       if (c > 32 && c < 127) {