diff --git a/xNet/Html.cs b/xNet/Html.cs
index db77199..6801190 100644
--- a/xNet/Html.cs
+++ b/xNet/Html.cs
@@ -77,7 +77,7 @@ public static string ReplaceUnicode(this string str)
                 return string.Empty;
             }
 
-            var regex = new Regex(@"\\[uU](?<text>[0-9A-F]{4})", RegexOptions.Compiled);
+            var regex = new Regex(@"\\u(?<code>[0-9a-f]{4})", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
             string result = regex.Replace(str, match =>
             {
@@ -583,4 +583,4 @@ public static string[] Substrings(this string str, string left, string right,
 
         #endregion
     }
-}
\ No newline at end of file
+}