diff --git a/man/homectl.xml b/man/homectl.xml
index 1cfbdcd4f83..7fc7d5f0122 100644
--- a/man/homectl.xml
+++ b/man/homectl.xml
@@ -269,6 +269,11 @@
owned by a different UID when logging in, the home directory and everything underneath it will have
its ownership changed automatically before login completes.
+ Note that changing this option for existing home directories generally has no effect on home
+ directories that already have been registered locally (have a local binding), as
+ the UID used for an account on the local system is determined when the home directory is first
+ activated on it, and then remains in effect until the home directory is removed.
+
Note that users managed by systemd-homed always have a matching group
associated with the same name as well as a GID matching the UID of the user. Thus, configuring the
GID separately is not permitted.