diff --git a/htdocs/openwebrx.js b/htdocs/openwebrx.js
index 8a985aa..a7518cb 100644
--- a/htdocs/openwebrx.js
+++ b/htdocs/openwebrx.js
@@ -1148,6 +1148,9 @@ function on_ws_recv(evt) {
                         break;
                     case 'backoff':
                         divlog("Server is currently busy: " + json['reason'], true);
+                        var $overlay = $('#openwebrx-error-overlay');
+                        $overlay.find('.errormessage').text(json['reason']);
+                        $overlay.show();
                         // set a higher reconnection timeout right away to avoid additional load
                         reconnect_timeout = 16000;
                         break;
diff --git a/owrx/connection.py b/owrx/connection.py
index 295d3a4..7aa6fc6 100644
--- a/owrx/connection.py
+++ b/owrx/connection.py
@@ -89,7 +89,7 @@ class OpenWebRxReceiverClient(Client):
         try:
             ClientRegistry.getSharedInstance().addClient(self)
         except TooManyClientsException:
-            self.write_backoff_message("too many clients")
+            self.write_backoff_message("Too many clients")
             self.close()
             raise