diff --git a/docs/busybox.sgml b/docs/busybox.sgml
index 0a2683faf..aa3c37692 100644
--- a/docs/busybox.sgml
+++ b/docs/busybox.sgml
@@ -3103,6 +3103,7 @@
 			-O FILE	Use an alternate log file (default=/var/log/messages)
 			-R HOST[:PORT] Log remotely to IP or hostname on PORT (default PORT=514/UDP)
 			-L      Log locally as well as network logging (default is network only)
+			-C      Log to a circular buffer. Read this buffer using 'logread'
 		</screen>
 		</para>