diff --git a/src/components/captions/CaptionList.js b/src/components/captions/CaptionList.js
index 0e6f3e9..8de53ab 100644
--- a/src/components/captions/CaptionList.js
+++ b/src/components/captions/CaptionList.js
@@ -8,7 +8,11 @@ const CaptionList = props => {
       {Object.keys(captions).map(key => {
         return captions[key].map(caption => {
           return (
-            <tr onClick={() => handleClick({ nick: caption.nick, text: caption.text })}>
+            <tr key = {key}
+              onClick={() =>
+                handleClick({ nick: caption.nick, text: caption.text })
+              }
+            >
               <td>{caption.nick}</td>
               <td>{caption.text}</td>
             </tr>