diff --git a/addons/mail/static/src/core/common/messaging_service.js b/addons/mail/static/src/core/common/messaging_service.js
index 06602d3db13..b034cf6be19 100644
--- a/addons/mail/static/src/core/common/messaging_service.js
+++ b/addons/mail/static/src/core/common/messaging_service.js
@@ -11,7 +11,6 @@ import { markup, reactive } from "@odoo/owl";
 import { _t } from "@web/core/l10n/translation";
 import { registry } from "@web/core/registry";
 import { Deferred } from "@web/core/utils/concurrency";
-import { sprintf } from "@web/core/utils/strings";
 
 /**
  * @typedef {Messaging} Messaging
@@ -29,7 +28,6 @@ export class Messaging {
         this.orm = services.orm;
         /** @type {import("@mail/core/common/attachment_service").AttachmentService} */
         this.attachmentService = services["mail.attachment"];
-        this.notificationService = services.notification;
         /** @type {import("@mail/core/common/user_settings_service").UserSettings} */
         this.userSettingsService = services["mail.user_settings"];
         /** @type {import("@mail/core/common/thread_service").ThreadService} */
@@ -276,21 +274,6 @@ export class Messaging {
                     }
                     break;
                 }
-                case "discuss.channel/unpin": {
-                    const thread =
-                        this.store.threads[createLocalId("discuss.channel", notif.payload.id)];
-                    if (thread) {
-                        thread.is_pinned = false;
-                        this.notificationService.add(
-                            sprintf(
-                                _t("You unpinned your conversation with %s"),
-                                thread.displayName
-                            ),
-                            { type: "info" }
-                        );
-                    }
-                    break;
-                }
                 case "mail.message/notification_update":
                     {
                         notif.payload.elements.map((message) => {
@@ -468,7 +451,6 @@ export const messagingService = {
         "router",
         "bus_service",
         "im_status",
-        "notification",
         "mail.attachment",
         "mail.user_settings",
         "mail.thread",
diff --git a/addons/mail/static/src/core/web/messaging_service_patch.js b/addons/mail/static/src/core/web/messaging_service_patch.js
index 52fd4b37325..66e34576174 100644
--- a/addons/mail/static/src/core/web/messaging_service_patch.js
+++ b/addons/mail/static/src/core/web/messaging_service_patch.js
@@ -11,6 +11,7 @@ patch(Messaging.prototype, "mail/core/web", {
         this._super(env, services, initialThreadLocalId);
         /** @type {import("@mail/core/common/chat_window_service").ChatWindow} */
         this.chatWindowService = services["mail.chat_window"];
+        this.notificationService = services.notification;
         this.ui = services["ui"];
         this.bus.subscribe("res.users/connection", async ({ partnerId, username }) => {
             // If the current user invited a new user, and the new user is
@@ -44,5 +45,5 @@ patch(Messaging.prototype, "mail/core/web", {
 });
 
 patch(messagingService, "mail/core/web", {
-    dependencies: [...messagingService.dependencies, "mail.chat_window", "ui"],
+    dependencies: [...messagingService.dependencies, "mail.chat_window", "notification", "ui"],
 });
diff --git a/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js b/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
index d7395ead99d..38b1a9e9918 100644
--- a/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
+++ b/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
@@ -94,6 +94,16 @@ export class DiscussCoreCommon {
                 channel.messages.push(message);
                 channel.transientMessages.push(message);
             });
+            this.busService.subscribe("discuss.channel/unpin", (payload) => {
+                const thread = this.store.threads[createLocalId("discuss.channel", payload.id)];
+                if (thread) {
+                    thread.is_pinned = false;
+                    this.notificationService.add(
+                        sprintf(_t("You unpinned your conversation with %s"), thread.displayName),
+                        { type: "info" }
+                    );
+                }
+            });
             this.busService.subscribe("discuss.channel.member/fetched", (payload) => {
                 const { channel_id, last_message_id, partner_id } = payload;
                 const channel = this.store.threads[createLocalId("discuss.channel", channel_id)];