diff --git a/youtube_dl_gui/OptionsHandler.py b/youtube_dl_gui/OptionsHandler.py
index a368ada..64387d8 100644
--- a/youtube_dl_gui/OptionsHandler.py
+++ b/youtube_dl_gui/OptionsHandler.py
@@ -32,7 +32,7 @@ class OptionsHandler():
         self.options = {
                 'save_path': get_HOME(),
                 'video_format': 'default',
-                'dash_audio_format': 'NO SOUND',
+                'dash_audio_format': 'none',
                 'clear_dash_files': False,
                 'to_audio': False,
                 'keep_video': False,
diff --git a/youtube_dl_gui/Utils.py b/youtube_dl_gui/Utils.py
index 5333f0d..0fcb81c 100644
--- a/youtube_dl_gui/Utils.py
+++ b/youtube_dl_gui/Utils.py
@@ -48,7 +48,7 @@ def video_is_dash(video):
     return "DASH" in video
 
 def have_dash_audio(audio):
-    return audio != "NO SOUND"
+    return audio != "none"
 
 def get_path_seperator():
     return '\\' if os_type == 'nt' else '/'
diff --git a/youtube_dl_gui/YoutubeDLGUI.py b/youtube_dl_gui/YoutubeDLGUI.py
index 9013622..5440a60 100644
--- a/youtube_dl_gui/YoutubeDLGUI.py
+++ b/youtube_dl_gui/YoutubeDLGUI.py
@@ -49,7 +49,7 @@ VIDEOFORMATS = ["default",
                 "mp4 480p(DASH)",
                 "mp4 360p(DASH)"]
 
-DASH_AUDIO_FORMATS = ["NO SOUND",
+DASH_AUDIO_FORMATS = ["none",
                       "DASH m4a audio 128k",
                       "DASH webm audio 48k"]
 
diff --git a/youtube_dl_gui/YoutubeDLInterpreter.py b/youtube_dl_gui/YoutubeDLInterpreter.py
index 2e07f0b..d326b44 100644
--- a/youtube_dl_gui/YoutubeDLInterpreter.py
+++ b/youtube_dl_gui/YoutubeDLInterpreter.py
@@ -35,7 +35,7 @@ VIDEOFORMATS = {"default":"0",
                 "mp4 480p(DASH)":"135",
                 "mp4 360p(DASH)":"134"}
 
-DASH_AUDIO_FORMATS = {"NO SOUND":"None",
+DASH_AUDIO_FORMATS = {"none":"none",
                       "DASH m4a audio 128k":"140",
                       "DASH webm audio 48k":"171"}
 
@@ -124,7 +124,7 @@ class YoutubeDLInterpreter():
             if video_is_dash(self.optManager.options['video_format']):
                 vf = VIDEOFORMATS[self.optManager.options['video_format']]
                 af = DASH_AUDIO_FORMATS[self.optManager.options['dash_audio_format']]
-                if af != 'None':
+                if af != 'none':
                     self.opts.append(vf+'+'+af)
                 else:
                     self.opts.append(vf)