diff --git a/bin/mov2gif b/bin/mov2gif
index 5e1f7735..5b0bad4f 100755
--- a/bin/mov2gif
+++ b/bin/mov2gif
@@ -1,4 +1,4 @@
-#!/usr/bin/env nix-shell
+#!/usr/bin/env cached-nix-shell
 #! nix-shell -i bash -p ffmpeg gifsicle
 
 # Uses ffmpeg to convert a video file to a gif file. Optimizes the final result
@@ -7,8 +7,8 @@
 # Requires: ffmpeg gifsicle
 #
 # Example:
-#   vid2gif some-vid.mp4 output.gif
-#   vid2gif -f 10 -s 00:00:10 -t 00:00:05 some-vid.mp4 output.gif
+#   mov2gif some-vid.mp4 output.gif
+#   mov2gif -f 10 -s 00:00:10 -t 00:00:05 some-vid.mp4 output.gif
 
 set -e
 PALETTE="/tmp/palette.png"