diff --git a/tslint.json b/tslint.json
index 9b010d9a896..71efb21ad7b 100644
--- a/tslint.json
+++ b/tslint.json
@@ -38,6 +38,7 @@
         "no-trailing-whitespace": true,
         "no-inferrable-types": true,
         "no-null": true,
+        "no-unused-variable": true,
         "boolean-trivia": true,
         "type-operator-spacing": true,
         "prefer-const": true,