diff --git a/youtube_dl_gui/optionsmanager.py b/youtube_dl_gui/optionsmanager.py
index 0f94528..eb2e437 100644
--- a/youtube_dl_gui/optionsmanager.py
+++ b/youtube_dl_gui/optionsmanager.py
@@ -258,7 +258,7 @@ class OptionsManager(object):
             'main_win_size': (710, 490),
             'opts_win_size': (640, 470),
             'selected_video_formats': ['webm', 'mp4'],
-            'selected_audio_formats': ['mp3', 'vorbis'],
+            'selected_audio_formats': ['mp3', 'm4a', 'vorbis'],
             'selected_format': '0'
         }