diff --git a/man/remote-viewer.pod b/man/remote-viewer.pod
index 48df479..2526675 100644
--- a/man/remote-viewer.pod
+++ b/man/remote-viewer.pod
@@ -188,7 +188,8 @@ Opens the client windows in fullscreen.
 
 =item C<ca> (string)
 
-CA certificate in PEM format (using "\n" to separate the lines), for verification purposes.
+CA certificate in PEM format (using "\n" to separate the lines). This will be
+used to verify the SSL certificate used for SPICE TLS sessions.
 
 =item C<host-subject> (string)