diff --git a/plugins/chat/assets/javascripts/discourse/services/chat-channel-pane.js b/plugins/chat/assets/javascripts/discourse/services/chat-channel-pane.js
index 9e5e9461d86..91b118dbcff 100644
--- a/plugins/chat/assets/javascripts/discourse/services/chat-channel-pane.js
+++ b/plugins/chat/assets/javascripts/discourse/services/chat-channel-pane.js
@@ -16,7 +16,7 @@ export default class ChatChannelPane extends Service {
   @tracked sendingLoading = false;
 
   get selectedMessageIds() {
-    return this.chat.activeChannel.selectedMessages.mapBy("id");
+    return this.chat.activeChannel?.selectedMessages?.mapBy("id") || [];
   }
 
   get composerService() {