diff --git a/Machines/Electron/Electron.cpp b/Machines/Electron/Electron.cpp
index 805700752..636c3faab 100644
--- a/Machines/Electron/Electron.cpp
+++ b/Machines/Electron/Electron.cpp
@@ -485,6 +485,7 @@ void Machine::synchronise()
 {
 	update_display();
 	update_audio();
+	_speaker->flush();
 }
 
 void Machine::configure_as_target(const StaticAnalyser::Target &target)