diff --git a/mod_webpresence/src/mod_webpresence.erl b/mod_webpresence/src/mod_webpresence.erl
index 0251341..7a58013 100644
--- a/mod_webpresence/src/mod_webpresence.erl
+++ b/mod_webpresence/src/mod_webpresence.erl
@@ -573,10 +573,15 @@ get_status_weight(Show) ->
 session_to_presence(#session{sid = {_, Pid}}) ->
     P = ejabberd_c2s:get_presence(Pid),
     #presence2{resource = (P#presence.from)#jid.resource,
-              show = misc:atom_to_binary(P#presence.show),
+              show = misc:atom_to_binary(humanize_show(P#presence.show)),
               priority = P#presence.priority,
               status = xmpp:get_text(P#presence.status)}.
 
+humanize_show(undefined) ->
+    available;
+humanize_show(Show) ->
+    Show.
+
 get_presences({bare, LUser, LServer}) ->
     [session_to_presence(Session) ||
         Session <- mnesia:dirty_index_read(session, {LUser, LServer}, #session.us)];