diff --git a/daemon/rtpengine.pod b/daemon/rtpengine.pod
index 93153dbb5..654e22f86 100644
--- a/daemon/rtpengine.pod
+++ b/daemon/rtpengine.pod
@@ -952,7 +952,7 @@ cipher used by the DTLS certificate). The format of this string is an OpenSSL
 cipher list. The default is
 B<DEFAULT:!NULL:!aNULL:!SHA256:!SHA384:!aECDH:!AESGCM+AES256:!aPSK>
 
-=item B<--dtls-mtu>
+=item B<--dtls-mtu=>I<INT>
 
 Set DTLS MTU to enable fragmenting of large DTLS packets. Defaults to 1200.
 Minimum value is 576 as the internet protocol requires that hosts must be able to