diff --git a/websocket-sharp/Net/HttpListenerResponse.cs b/websocket-sharp/Net/HttpListenerResponse.cs
index b72309ca..ec7209ef 100644
--- a/websocket-sharp/Net/HttpListenerResponse.cs
+++ b/websocket-sharp/Net/HttpListenerResponse.cs
@@ -996,10 +996,10 @@ namespace WebSocketSharp.Net
     /// the headers for the response.
     /// </summary>
     /// <param name="name">
-    /// A <see cref="string"/> that represents the name of the header to add.
+    /// A <see cref="string"/> that represents the name of the header to set.
     /// </param>
     /// <param name="value">
-    /// A <see cref="string"/> that represents the value of the header to add.
+    /// A <see cref="string"/> that represents the value of the header to set.
     /// </param>
     /// <exception cref="ArgumentNullException">
     /// <paramref name="name"/> is <see langword="null"/> or empty.
@@ -1021,7 +1021,7 @@ namespace WebSocketSharp.Net
     /// characters.
     /// </exception>
     /// <exception cref="InvalidOperationException">
-    /// The header cannot be allowed to add to the current headers.
+    /// The header cannot be allowed to set in the current headers.
     /// </exception>
     public void SetHeader (string name, string value)
     {