diff --git a/delay.sh b/delay.sh
index 49e9b66..f1de385 100755
--- a/delay.sh
+++ b/delay.sh
@@ -11,7 +11,7 @@ rm -rf /tmp/delay_stream*
 
 ffmpeg -f v4l2 -framerate $FPS -video_size $SIZE -i $DEVICE \
   -vcodec libx264 -preset ultrafast -tune zerolatency \
-  -vf scale=720:576i \
+  -vf scale=720:576 \
   -f hls -hls_time 1 -hls_list_size $((DELAY + 5)) -hls_flags delete_segments \
   /tmp/delay_stream.m3u8 &
 FFMPEG_PID=$!