diff --git a/ui/app/components/ens-input.js b/ui/app/components/ens-input.js
index f1cf49998..001c227c4 100644
--- a/ui/app/components/ens-input.js
+++ b/ui/app/components/ens-input.js
@@ -63,6 +63,7 @@ EnsInput.prototype.render = function () {
           return h('option', {
             value: identity.address,
             label: identity.name,
+            key: identity.address,
           })
         }),
       ]),