diff --git a/ovgenpy/ovgenpy.py b/ovgenpy/ovgenpy.py
index d6533e2..7cf87c4 100644
--- a/ovgenpy/ovgenpy.py
+++ b/ovgenpy/ovgenpy.py
@@ -39,8 +39,8 @@ _FPS = 60  # f_s
 
 
 @click.command()
-@click.argument('wave_dir', type=Folder)
-@click.option('--audio_path', type=File, default=None)
+@click.argument('wave-dir', type=Folder)
+@click.option('--audio-path', type=File, default=None)
 @click.option('--fps', default=_FPS)
 @click.option('--output', default='output.mp4')
 def main(wave_dir: str, audio_path: Optional[str], fps: int, output: str):