diff --git a/components/signUpsModal.jsx b/components/signUpsModal.jsx
index 648aaecaac704d23cf9bba443c62933ec33174ec..f877fd1660fbd7f27c25c74431d6561698b57177 100644
--- a/components/signUpsModal.jsx
+++ b/components/signUpsModal.jsx
@@ -24,7 +24,7 @@ export default function SignUpsModal({ open, close, event }) {
         </thead>
         <tbody>
           {event.signUps.map((signUp, i) => (
-            <tr>
+            <tr key={i}>
               <td>
                 {signUp.firstName} {signUp.lastName}
               </td>