diff --git a/websocket-sharp/Net/WebHeaderCollection.cs b/websocket-sharp/Net/WebHeaderCollection.cs
index d483cb65..15f4b8cb 100644
--- a/websocket-sharp/Net/WebHeaderCollection.cs
+++ b/websocket-sharp/Net/WebHeaderCollection.cs
@@ -1349,7 +1349,7 @@ namespace WebSocketSharp.Net
     /// <c>true</c> if the header cannot be set; otherwise, <c>false</c>.
     /// </returns>
     /// <param name="headerName">
-    /// A <see cref="string"/> that represents the name of the header to test.
+    /// A <see cref="string"/> that specifies the name of the header to test.
     /// </param>
     /// <exception cref="ArgumentNullException">
     /// <paramref name="headerName"/> is <see langword="null"/>.