diff --git a/manual/config/seafile-conf.md b/manual/config/seafile-conf.md
index b7752f64..970bd5f6 100644
--- a/manual/config/seafile-conf.md
+++ b/manual/config/seafile-conf.md
@@ -403,18 +403,3 @@ go tool pprof http://localhost:8082/debug/pprof/heap?password=8kcUz1I2sLaywQhCRt
 go tool pprof http://localhost:8082/debug/pprof/profile?password=8kcUz1I2sLaywQhCRtn2x1
 ```
 
-## Notification server configuration
-Since Seafile 10.0.0, you can ask Seafile server to send notifications (file changes, lock changes and folder permission changes) to [Notification Server component](../extension/notification-server.md).
-
-```
-[notification]
-enabled = true
-# IP address of the server running notification server
-# or "notification-server" if you are running notification server container on the same host as Seafile server
-host = 192.168.0.83
-# the port of notification server
-port = 8083
-```
-
-!!! tip
-    The configuration here only works for version >= 12.0. The configuration for notificaton server has been changed in 12.0 to make it clearer. The new configuration is not compatible with older versions.
diff --git a/manual/upgrade/upgrade_docker.md b/manual/upgrade/upgrade_docker.md
index e0f7bb99..3f328bd3 100644
--- a/manual/upgrade/upgrade_docker.md
+++ b/manual/upgrade/upgrade_docker.md
@@ -212,7 +212,7 @@ Although the configurations in environment (i.e., `.env`) have higher priority t
 
 2. Clean up redundant configuration items in the configuration files:
 
-    - Open `/opt/seafile-data/seafile/conf/seafile.conf` and remove the entire `[memcached]`, `[database]`, `[commit_object_backend]`, `[fs_object_backend]` and `[block_backend]` if above sections have correctly specified in `.env`.
+    - Open `/opt/seafile-data/seafile/conf/seafile.conf` and remove the entire `[memcached]`, `[database]`, `[commit_object_backend]`, `[fs_object_backend]`, `[notification]` and `[block_backend]` if above sections have correctly specified in `.env`.
     - Open `/opt/seafile-data/seafile/conf/seahub_settings.py` and remove the entire blocks for `DATABASES = {...}` and `CAHCES = {...}`
 
     In the most cases, the `seafile.conf` only include the listen port `8082` of Seafile file server.