diff --git a/src/libraries/System.Private.Uri/src/System/UriHelper.cs b/src/libraries/System.Private.Uri/src/System/UriHelper.cs
index 660d15d49ade4f..0165a4926d80e5 100644
--- a/src/libraries/System.Private.Uri/src/System/UriHelper.cs
+++ b/src/libraries/System.Private.Uri/src/System/UriHelper.cs
@@ -4,15 +4,11 @@
 using System.Text;
 using System.Diagnostics;
 using System.Runtime.InteropServices;
-using System.Buffers;
 
 namespace System
 {
     internal static class UriHelper
     {
-        internal static readonly Encoding s_noFallbackCharUTF8 = Encoding.GetEncoding(
-            Encoding.UTF8.CodePage, new EncoderReplacementFallback(""), new DecoderReplacementFallback(""));
-
         // http://host/Path/Path/File?Query is the base of
         //      - http://host/Path/Path/File/ ...    (those "File" words may be different in semantic but anyway)
         //      - http://host/Path/Path/#Fragment