diff --git a/man/journald.conf.xml b/man/journald.conf.xml
index ee8e8b7faf8..927cd6da829 100644
--- a/man/journald.conf.xml
+++ b/man/journald.conf.xml
@@ -195,7 +195,11 @@
subsequently something else causes the file system to fill up,
journald will stop using more space, but it will not be
removing existing files to reduce the footprint again,
- either.
+ either. Also note that only archived files are deleted to reduce the
+ space occupied by journal files. This means that, in effect, there might
+ still be more space used than SystemMaxUse= or
+ RuntimeMaxUse= limit after a vacuuming operation is
+ complete.
SystemMaxFileSize= and
RuntimeMaxFileSize= control how large