diff --git a/lib/membrane/core/timer_controller.ex b/lib/membrane/core/timer_controller.ex
index 85e154fcb..738a280c1 100644
--- a/lib/membrane/core/timer_controller.ex
+++ b/lib/membrane/core/timer_controller.ex
@@ -67,6 +67,8 @@ defmodule Membrane.Core.TimerController do
         state
       )
 
+    # linijki ponizej są kluczowe
+
     # in case the timer was removed in handle_tick
     if is_timer_present(timer_id, state) do
       update_in(state, [:synchronization, :timers, timer_id], &Timer.tick/1)