diff --git a/lib/membrane/hls/sink_bin.ex b/lib/membrane/hls/sink_bin.ex
index fb4488f..12edcd1 100644
--- a/lib/membrane/hls/sink_bin.ex
+++ b/lib/membrane/hls/sink_bin.ex
@@ -225,7 +225,8 @@ defmodule Membrane.HLS.SinkBin do
     {[], state}
   end
 
-  def handle_child_notification(:flush, _, ctx, state) do
+  @impl true
+  def handle_parent_notification(:flush, ctx, state) do
     if not state.flush and all_streams_ended?(ctx, state.ended_sinks) do
       Agent.update(state.packager_pid, &Packager.flush/1, :infinity)
       {[notify_parent: :end_of_stream], state}