diff --git a/nyan b/nyan
index 91b5af5..750d821 100755
--- a/nyan
+++ b/nyan
@@ -1,8 +1,7 @@
 #!/bin/bash
-optstring="o:"
+optstring="o:h"
 declare -i abort=0
 
-# TODO: Add help option to display usage.
 # TODO: Consider a switch for per-file progress bars rather than a whole-operation one.
 
 if [ ! -e "$(which pv)" ]; then
@@ -14,6 +13,7 @@ while getopts ${optstring} args; do
 	case $args in
 		o) output_file=${OPTARG} ;;
 		:) echo "Output file required." ;;
+		h) echo "Usage: nyan -o [OUTPUT FILE] [INPUT FILE]..." && exit 0 ;;
 	esac
 done
 shift $((OPTIND-1))