diff --git a/Machines/Atari2600/Atari2600.cpp b/Machines/Atari2600/Atari2600.cpp
index 9037a6c43..ea96ea83c 100644
--- a/Machines/Atari2600/Atari2600.cpp
+++ b/Machines/Atari2600/Atari2600.cpp
@@ -777,5 +777,6 @@ void Machine::update_audio()
 void Machine::synchronise()
 {
 	update_audio();
+	speaker_->flush();
 }