diff --git a/addons/mail/static/src/core/persona_model.js b/addons/mail/static/src/core/persona_model.js
index 42e229b1bc7..01441b16de7 100644
--- a/addons/mail/static/src/core/persona_model.js
+++ b/addons/mail/static/src/core/persona_model.js
@@ -30,7 +30,6 @@ export class Persona {
     /** @type {ImStatus} */
     im_status;
     isAdmin = false;
-    channelId;
     /** @type {import("@mail/core/store_service").Store} */
     _store;