diff --git a/.zshrc b/.zshrc
index 0d2236c..18e1266 100644
--- a/.zshrc
+++ b/.zshrc
@@ -68,7 +68,7 @@ convert-tomp4() {
 }
 
 convert-todavinci() {
-	ffmpeg -i "$1" -map 0:v -map 0:a -c:v mpeg4 -qscale:v 1 -c:a pcm_s24le "$1.davinci.mov"
+	ffmpeg -i "$1" -map 0:v -map "0:a?" -c:v mpeg4 -qscale:v 1 -c:a pcm_s24le "$1.davinci.mov"
 }