diff --git a/ChangeLog b/ChangeLog
index 0b126b16..b25b891e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -63,6 +63,11 @@ ver. 0.10.5-dev-1 (20??/??/??) - development edition
 -----------
 
 ### Fixes
+* [grave] fixed parsing of multi-line filters (`maxlines` > 1) together with systemd backend,
+  now systemd-filter replaces newlines in message from systemd journal with `\n` (otherwise 
+  multi-line parsing may be broken, because removal of matched string from multi-line buffer window
+  is confused by such extra new-lines, so they are retained and got matched on every followed 
+  message, see gh-2431)
 * fixed read of included config-files (`.local` overwrites options of `.conf` for config-files 
   included with before/after)
 * `action.d/helpers-common.conf`: rewritten grep arguments, now options `-wF` used to match only
diff --git a/fail2ban/server/filtersystemd.py b/fail2ban/server/filtersystemd.py
index f3ffc827..5f17596a 100644
--- a/fail2ban/server/filtersystemd.py
+++ b/fail2ban/server/filtersystemd.py
@@ -236,7 +236,7 @@ class FilterSystemd(JournalFilter): # pragma: systemd no cover
 		logSys.log(5, "[%s] Read systemd journal entry: %s %s", self.jailName,
 			date.isoformat(), logline)
 		## use the same type for 1st argument:
-		return ((logline[:0], date.isoformat(), logline),
+		return ((logline[:0], date.isoformat(), logline.replace('\n', '\\n')),
 			time.mktime(date.timetuple()) + date.microsecond/1.0E6)
 
 	def seekToTime(self, date):