diff --git a/websocket-sharp/Net/NetworkCredential.cs b/websocket-sharp/Net/NetworkCredential.cs
index 7386ab04..4881f59d 100644
--- a/websocket-sharp/Net/NetworkCredential.cs
+++ b/websocket-sharp/Net/NetworkCredential.cs
@@ -150,8 +150,12 @@ namespace WebSocketSharp.Net
     /// <summary>
     /// Gets the password for the username associated with the credentials.
     /// </summary>
+    /// <remarks>
+    /// This property returns an empty string if the password was
+    /// initialized with <see langword="null"/>.
+    /// </remarks>
     /// <value>
-    /// A <see cref="string"/> that represents the password for the username.
+    /// A <see cref="string"/> that represents the password.
     /// </value>
     public string Password {
       get {