diff --git a/webui/src/pages/bug/MessageHistoryDialog.tsx b/webui/src/pages/bug/MessageHistoryDialog.tsx
index da5d0ccff93d7810d7fe4ff806738cbaa6690aed..5879a373aa3e82a800580497b1d223819f001836 100644
--- a/webui/src/pages/bug/MessageHistoryDialog.tsx
+++ b/webui/src/pages/bug/MessageHistoryDialog.tsx
@@ -217,6 +217,7 @@ function MessageHistoryDialog({ bugId, commentId, open, onClose }: Props) {
         {history?.map((edit, index) => (
           <Accordion
             square
+            key={index}
             expanded={expanded === 'panel' + index}
             onChange={handleChange('panel' + index)}
           >