diff --git a/batch-convert.sh b/batch-convert.sh
index 55b6b9f..50d14c1 100755
--- a/batch-convert.sh
+++ b/batch-convert.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 find . -maxdepth 1 -name "*.mov" -print0 |
   sed 's/\.mov\x00/\x00/g' |
   xargs -r0 -I FILENAME ffmpeg -i FILENAME.mov -vcodec copy -acodec copy FILENAME.mp4