diff --git a/ui/lib/ui_web/controllers/page_controller.ex b/ui/lib/ui_web/controllers/page_controller.ex
index 7bb9da1..ef56340 100644
--- a/ui/lib/ui_web/controllers/page_controller.ex
+++ b/ui/lib/ui_web/controllers/page_controller.ex
@@ -11,7 +11,10 @@ defmodule UiWeb.PageController do
   end
 
   def morse(conn, _params) do
-    ip = conn |> Plug.Conn.get_req_header("x-real-ip") |> hd()
+    ip = case Plug.Conn.get_req_header(conn, "x-real-ip") do
+      [h|_tl] -> h
+      _ -> "0.0.0.0"
+    end
     LiveView.Controller.live_render(conn, UiWeb.MorseLive, session: %{ip: ip})
   end
 end
diff --git a/ui/lib/ui_web/live/morse_live.ex b/ui/lib/ui_web/live/morse_live.ex
index 5831da5..34f9204 100644
--- a/ui/lib/ui_web/live/morse_live.ex
+++ b/ui/lib/ui_web/live/morse_live.ex
@@ -13,8 +13,8 @@ defmodule UiWeb.MorseLive do
   end
 
   def handle_event("toggle_morse", _value, %{assigns: %{ip: ip}} = socket) do
-    if not Morse.Server.in_progress?() and ip != "127.0.0.1" do
-      spawn fn -> Ui.TelegramBot.message("#{ip} pressed the button!") end
+    if not Morse.Server.in_progress?() and ip_send_message?(ip) do
+      spawn(fn -> Ui.TelegramBot.message("#{ip} pressed the button!") end)
     end
 
     Morse.Server.toggle_morse()
@@ -38,4 +38,9 @@ defmodule UiWeb.MorseLive do
       ip: ip
     ]
   end
+
+  defp ip_send_message?(ip) do
+    not (String.starts_with?(ip, "192.168.") or String.starts_with?(ip, "10.")
+      or ip == "127.0.0.1" or ip == "localhost" or ip == "0.0.0.0")
+  end
 end