diff --git a/websocket-sharp/Server/WebSocketServer.cs b/websocket-sharp/Server/WebSocketServer.cs
index 25ed9e00..c0a0e2e2 100644
--- a/websocket-sharp/Server/WebSocketServer.cs
+++ b/websocket-sharp/Server/WebSocketServer.cs
@@ -578,7 +578,7 @@ namespace WebSocketSharp.Server
     }
 
     /// <summary>
-    /// Gets the configuration for secure connections.
+    /// Gets the configuration for secure connection.
     /// </summary>
     /// <remarks>
     /// This configuration will be referenced when attempts to start,