diff --git a/src/librustdoc/html/static/.eslintrc.js b/src/librustdoc/html/static/.eslintrc.js
index 7d7affded7ef..b83c1a2459a8 100644
--- a/src/librustdoc/html/static/.eslintrc.js
+++ b/src/librustdoc/html/static/.eslintrc.js
@@ -65,5 +65,6 @@ module.exports = {
         "eqeqeq": "error",
         "no-const-assign": "error",
         "no-debugger": "error",
+        "no-dupe-args": "error",
     }
 };