diff --git a/src/journal/journald.conf b/src/journal/journald.conf
index 5a60a9d39c..30474cb526 100644
--- a/src/journal/journald.conf
+++ b/src/journal/journald.conf
@@ -30,7 +30,7 @@
 #RuntimeKeepFree=
 #RuntimeMaxFileSize=
 #RuntimeMaxFiles=100
-#MaxRetentionSec=
+#MaxRetentionSec=0
 #MaxFileSec=1month
 #ForwardToSyslog=no
 #ForwardToKMsg=no