diff --git a/websocket-sharp/Ext.cs b/websocket-sharp/Ext.cs
index e12fc6f4..4cb13795 100644
--- a/websocket-sharp/Ext.cs
+++ b/websocket-sharp/Ext.cs
@@ -908,22 +908,25 @@ namespace WebSocketSharp
     }
 
     /// <summary>
-    /// Tries to create a <see cref="Uri"/> for WebSocket with
+    /// Tries to create a new <see cref="Uri"/> for WebSocket with
     /// the specified <paramref name="uriString"/>.
     /// </summary>
     /// <returns>
-    /// <c>true</c> if a <see cref="Uri"/> is successfully created; otherwise, <c>false</c>.
+    /// <c>true</c> if the <see cref="Uri"/> was successfully created;
+    /// otherwise, <c>false</c>.
     /// </returns>
     /// <param name="uriString">
     /// A <see cref="string"/> that represents a WebSocket URL to try.
     /// </param>
     /// <param name="result">
-    /// When this method returns, a <see cref="Uri"/> that represents a WebSocket URL,
-    /// or <see langword="null"/> if <paramref name="uriString"/> is invalid.
+    /// When this method returns, a <see cref="Uri"/> that
+    /// represents the WebSocket URL or <see langword="null"/>
+    /// if <paramref name="uriString"/> is invalid.
     /// </param>
     /// <param name="message">
-    /// When this method returns, a <see cref="string"/> that represents an error message,
-    /// or <see cref="String.Empty"/> if <paramref name="uriString"/> is valid.
+    /// When this method returns, a <see cref="string"/> that
+    /// represents an error message or <see langword="null"/>
+    /// if <paramref name="uriString"/> is valid.
     /// </param>
     internal static bool TryCreateWebSocketUri (
       this string uriString, out Uri result, out string message