--- a/devtools/.eslintrc
+++ b/devtools/.eslintrc
@@ -35,17 +35,17 @@
 
     // Rules from the React plugin
     "react/display-name": 1,
     "react/no-danger": 1,
     "react/no-did-mount-set-state": 1,
     "react/no-did-update-set-state": 1,
     "react/no-direct-mutation-state": 1,
     "react/no-unknown-property": 1,
-    "react/prefer-es6-class": 1,
+    "react/prefer-es6-class": [1, "never"],
     "react/prop-types": 1,
     "react/sort-comp": [1, {
       order: [
         "propTypes",
         "everything-else",
         "render"
       ]
     }],