diff --git a/rename_episode.sh b/rename_episode.sh
index 253230e..1a75803 100644
--- a/rename_episode.sh
+++ b/rename_episode.sh
@@ -1,8 +1,15 @@
+if [ $# -ne 2 ];then
+  echo "Usage: rename_episode.sh [source directory] [destination directory]"
+  exit
+fi
+src=$1
+dest=$2
+read -p "Source? " src
+read -p "Destination? " dest
+
 echo "Schemes should be a regex of the form (?<=TEXT)\d\d(?=TEXT) where TEXT is uniquely identifying text"
 read -p "Season Scheme? " sscheme
 read -p "Episode Scheme? " escheme
-read -p "Source? " src
-read -p "Destination? " dest
 read -p "Series Name? " $name
 echo "Overrides (leave blank if no override)"
 read -p "Series? " $so