diff --git a/hevc-fix b/hevc-fix
index f2c9615..66b0174 100755
--- a/hevc-fix
+++ b/hevc-fix
@@ -1 +1 @@
-ffmpeg -i "$1" -acodec copy -vcodec copy -tag:v hvc1 -movflags +faststart "$2"
+ffmpeg -i "$1" -acodec copy -vcodec copy -tag:v hvc1 -movflags +faststart "${1%.mkv}.mp4"