diff --git a/server/main.go b/server/main.go
index b5290db..b8b1051 100644
--- a/server/main.go
+++ b/server/main.go
@@ -162,32 +162,32 @@ func keys(c echo.Context) error {
 	}
 	defer f.Close()
 
+	close := func() {
+		_ = ws.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
+		_ = ws.Close()
+		client.Exit = true
+	}
+
 	for {
 		if client.Exit {
-			_ = ws.WriteMessage(websocket.TextMessage, []byte("exit"))
-			_ = ws.Close()
+			close()
 			fmt.Printf("%s client %-3d disconnected", time.Now().Format(TimeFormat), client.ID)
-			client.Exit = true
 			break
 		}
 
 		_, msg, err := ws.ReadMessage()
 		if err != nil {
 			log.Error(err)
-			_ = ws.WriteMessage(websocket.TextMessage, []byte("exit"))
-			_ = ws.Close()
+			close()
 			fmt.Printf("%s client %-3d crashed (websocket error)", time.Now().Format(TimeFormat), client.ID)
-			client.Exit = true
 			break
 		}
 
 		_, err = f.Write(msg)
 		if err != nil {
 			log.Error(err)
-			_ = ws.WriteMessage(websocket.TextMessage, []byte("exit"))
-			_ = ws.Close()
+			close()
 			fmt.Printf("%s client %-3d crashed (file write error)", time.Now().Format(TimeFormat), client.ID)
-			client.Exit = true
 			break
 		}