diff --git a/backend/src/routes/communication.ts b/backend/src/routes/communication.ts
index e61fd86..2b12897 100644
--- a/backend/src/routes/communication.ts
+++ b/backend/src/routes/communication.ts
@@ -174,6 +174,10 @@ export default async function communicationRoutes(server: FastifyInstance) {
 
         if (room?.type === "direct" && room.entityUuid && room.entityUuid !== senderUserId) {
             directRecipients.add(room.entityUuid)
+        } else if (room?.type === "direct" && room.key) {
+            recipients
+                .filter((recipient) => directRoomKey(senderUserId, recipient.userId) === room.key)
+                .forEach((recipient) => directRecipients.add(recipient.userId))
         }
 
         return recipients