diff --git a/src/devtools/views/TabBar.js b/src/devtools/views/TabBar.js
index f75d464abb..53733b7ff8 100644
--- a/src/devtools/views/TabBar.js
+++ b/src/devtools/views/TabBar.js
@@ -100,7 +100,7 @@ export default function TabBar({
 
         if (title) {
           button = (
-            <Tooltip className={tooltipStyles.Tooltip} label={title}>
+            <Tooltip key={id} className={tooltipStyles.Tooltip} label={title}>
               {button}
             </Tooltip>
           );