diff --git a/addons/mail/static/src/core/common/messaging_service.js b/addons/mail/static/src/core/common/messaging_service.js
index b34ce9472aa..06602d3db13 100644
--- a/addons/mail/static/src/core/common/messaging_service.js
+++ b/addons/mail/static/src/core/common/messaging_service.js
@@ -276,20 +276,6 @@ export class Messaging {
                     }
                     break;
                 }
-                case "discuss.channel.member/fetched": {
-                    const { channel_id, last_message_id, partner_id } = notif.payload;
-                    const channel =
-                        this.store.threads[createLocalId("discuss.channel", channel_id)];
-                    if (channel) {
-                        const seenInfo = channel.seenInfos.find(
-                            (seenInfo) => seenInfo.partner.id === partner_id
-                        );
-                        if (seenInfo) {
-                            seenInfo.lastFetchedMessage = { id: last_message_id };
-                        }
-                    }
-                    break;
-                }
                 case "discuss.channel/unpin": {
                     const thread =
                         this.store.threads[createLocalId("discuss.channel", notif.payload.id)];
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 3afb7e714b6..d7395ead99d 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 +94,18 @@ export class DiscussCoreCommon {
                 channel.messages.push(message);
                 channel.transientMessages.push(message);
             });
+            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)];
+                if (channel) {
+                    const seenInfo = channel.seenInfos.find(
+                        (seenInfo) => seenInfo.partner.id === partner_id
+                    );
+                    if (seenInfo) {
+                        seenInfo.lastFetchedMessage = { id: last_message_id };
+                    }
+                }
+            });
             this.busService.subscribe("discuss.channel.member/seen", (payload) => {
                 const { channel_id, last_message_id, partner_id } = payload;
                 const channel = this.store.threads[createLocalId("discuss.channel", channel_id)];