diff --git a/torso.sh b/torso.sh
index 87c4218..3f68c0c 100644
--- a/torso.sh
+++ b/torso.sh
@@ -10,7 +10,7 @@ while getopts ":n:" opt; do
         n)
           re='^[0-9]+$'
           if ! [[ $OPTARG =~ $re ]] ; then
-              echo "Option -n requires a numeric argument"
+              echo "Option -n requires a numeric argument."
               exit 1
           fi
           lines=$(($OPTARG - 1))