diff --git a/libs/backends/pulseaudio/pulseaudio_backend.cc b/libs/backends/pulseaudio/pulseaudio_backend.cc
index af7138cb1e..b742a86c86 100644
--- a/libs/backends/pulseaudio/pulseaudio_backend.cc
+++ b/libs/backends/pulseaudio/pulseaudio_backend.cc
@@ -1399,8 +1399,6 @@ PulseAudioBackend::main_process_thread ()
 	manager.registration_callback ();
 	manager.graph_order_callback ();
 
-	manager.registration_callback ();
-	manager.graph_order_callback ();
 
 	/* flush stream */
 	pa_threaded_mainloop_lock (p_mainloop);