diff --git a/worker.md b/worker.md
index 67acec5..8bf3349 100644
--- a/worker.md
+++ b/worker.md
@@ -267,7 +267,7 @@ Allows the backend to instruct the worker to associate a session ID with a subsc
 {
   "type": "setSessionId",
   "payload": {
-    "subscriptionIdentifier": "display-001;cam-002",
+    "displayIdentifier": "display-001",
     "sessionId": 12345
   }
 }
@@ -279,7 +279,7 @@ Or to clear the session:
 {
   "type": "setSessionId",
   "payload": {
-    "subscriptionIdentifier": "display-001;cam-002",
+    "displayIdentifier": "display-001",
     "sessionId": null
   }
 }