diff --git a/websocket-sharp/Server/WebSocketSessionManager.cs b/websocket-sharp/Server/WebSocketSessionManager.cs
index 91cb7d72..fbf3007d 100644
--- a/websocket-sharp/Server/WebSocketSessionManager.cs
+++ b/websocket-sharp/Server/WebSocketSessionManager.cs
@@ -557,13 +557,13 @@ namespace WebSocketSharp.Server
     }
 
     /// <summary>
-    /// Sends <paramref name="data"/> to every client in the WebSocket service.
+    /// Sends the specified data to every client in the WebSocket service.
     /// </summary>
     /// <param name="data">
-    /// A <see cref="string"/> that represents the text data to send.
+    /// A <see cref="string"/> that specifies the text data to send.
     /// </param>
     /// <exception cref="InvalidOperationException">
-    /// The current state of the manager is not Start.
+    /// The current state of the service is not Start.
     /// </exception>
     /// <exception cref="ArgumentNullException">
     /// <paramref name="data"/> is <see langword="null"/>.