diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index 4ff456cc..c628d996 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -1533,7 +1533,7 @@ namespace WebSocketSharp
     {
       lock (_forState) {
         if (_readyState != WebSocketState.Open) {
-          _logger.Error ("The sending has been interrupted.");
+          _logger.Error ("The state of the connection has been changed.");
           return false;
         }