diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index c6906702..6eeb5b19 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -1651,7 +1651,7 @@ namespace WebSocketSharp
           catch (Exception ex) {
             _logger.Error (ex.ToString ());
             error (
-              "An exception has occurred during the callback for an async send.",
+              "An error has occurred during the callback for an async send.",
               ex
             );
           }