diff --git a/lib/rules/no-unused-vars.js b/lib/rules/no-unused-vars.js
index 8050b823b1e3..51cb0db8dd1e 100644
--- a/lib/rules/no-unused-vars.js
+++ b/lib/rules/no-unused-vars.js
@@ -60,7 +60,7 @@ module.exports = {
 
     create: function(context) {
 
-        var MESSAGE = "'{{name}}' is defined but never used";
+        var MESSAGE = "'{{name}}' is defined but never used.";
 
         var config = {
             vars: "all",