diff --git a/components/Messages.tsx b/components/Messages.tsx
index 6994e5c..9d5c02b 100644
--- a/components/Messages.tsx
+++ b/components/Messages.tsx
@@ -446,9 +446,9 @@ export default function Messages({
 										url={message.reveal.userTwitterProfileImage!}
 									/>
 								) : (
-									message.group.map((u) => (
+									message.group.map((u, index) => (
 										<UserIcon
-											key={u}
+											key={index}
 											url={lookupTwitterProfileImage(u, users)!}
 										/>
 									))
@@ -457,9 +457,9 @@ export default function Messages({
 						</div>
 						<div className="text-right text-gray-400">
 							{message.deny.length > 0 && "Not from "}
-							{message.deny?.map((d) => (
+							{message.deny?.map((d, index) => (
 								<UserIcon
-									key={d.userPublicKey}
+									key={index}
 									url={lookupTwitterProfileImage(d.userPublicKey, users)!}
 								/>
 							))}