From ab89d6500fe873155d511eb3ae44bf35f867a9a4 Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Mon, 8 Apr 2019 19:01:20 +0100
Subject: [PATCH] Fix missing key

---
 src/devtools/views/Components/OwnersStack.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/devtools/views/Components/OwnersStack.js b/src/devtools/views/Components/OwnersStack.js
index a9d789ac4a..96a74c96fe 100644
--- a/src/devtools/views/Components/OwnersStack.js
+++ b/src/devtools/views/Components/OwnersStack.js
@@ -122,6 +122,7 @@ function ElementsDropdown({
         <div className={styles.Modal} ref={modalRef}>
           {ownerStack.map((id, index) => (
             <button
+              key={id}
               className={
                 ownerStackIndex === index
                   ? styles.SelectedComponent