diff --git a/src/audio/QGCAudioWorker.cpp b/src/audio/QGCAudioWorker.cpp
index b7aad2657b9f249a9ac91765485bdcb44f6680fe..f664671369298771821e4840b040c85ccd767624 100644
--- a/src/audio/QGCAudioWorker.cpp
+++ b/src/audio/QGCAudioWorker.cpp
@@ -45,7 +45,7 @@ void QGCAudioWorker::init()
     sound = new QSound("");
 
 #if defined Q_OS_LINUX && defined QGC_SPEECH_ENABLED
-    espeak_Initialize(AUDIO_OUTPUT_PLAYBACK, 500, NULL, 0); // initialize for playback with 500ms buffer and no options (see speak_lib.h)
+    espeak_Initialize(AUDIO_OUTPUT_SYNCH_PLAYBACK, 500, NULL, 0); // initialize for playback with 500ms buffer and no options (see speak_lib.h)
     espeak_VOICE *espeak_voice = espeak_GetCurrentVoice();
     espeak_voice->languages = "en-uk"; // Default to British English
     espeak_voice->identifier = NULL; // no specific voice file specified