diff --git a/changelog.d/7477.doc b/changelog.d/7477.doc
new file mode 100644
index 000000000..9a2d26111
--- /dev/null
+++ b/changelog.d/7477.doc
@@ -0,0 +1 @@
+Fix copy-paste error in `ServerNoticesConfig` docstring. Contributed by @ptman.
\ No newline at end of file
diff --git a/synapse/config/server_notices_config.py b/synapse/config/server_notices_config.py
index 6ea2ea886..6c427b6f9 100644
--- a/synapse/config/server_notices_config.py
+++ b/synapse/config/server_notices_config.py
@@ -51,7 +51,7 @@ class ServerNoticesConfig(Config):
             None if server notices are not enabled.
 
         server_notices_mxid_avatar_url (str|None):
-            The display name to use for the server notices user.
+            The MXC URL for the avatar of the server notices user.
             None if server notices are not enabled.
 
         server_notices_room_name (str|None):