diff --git a/src/librustdoc/html/static/.eslintrc.js b/src/librustdoc/html/static/.eslintrc.js
index 2ffcbb82591..d6e96bd71e4 100644
--- a/src/librustdoc/html/static/.eslintrc.js
+++ b/src/librustdoc/html/static/.eslintrc.js
@@ -81,5 +81,6 @@ module.exports = {
         "no-confusing-arrow": "error",
         "no-div-regex": "error",
         "no-floating-decimal": "error",
+        "no-implicit-globals": "error",
     }
 };