No need to inform that XEP-0237 is optional; clarified in XEP version 1.2

diff --git a/src/mod_roster.erl b/src/mod_roster.erl
index b4dae868334df1910aabd5648f834cbe97cfddd1..6e6a0ca4378efb0fef38a50b79b504579c86b25d 100644 (file)
--- a/src/mod_roster.erl
+++ b/src/mod_roster.erl
@@ -258,8 +258,7 @@ roster_version_on_db(Host) ->
 get_versioning_feature(Acc, Host) ->
     case roster_versioning_enabled(Host) of
        true ->
-           Feature = exmpp_xml:element(?NS_ROSTER_VER_s, 'ver', [],
-                      [exmpp_xml:element(?NS_ROSTER_VER_s, 'optional')]),
+           Feature = exmpp_xml:element(?NS_ROSTER_VER_s, 'ver'),
            [Feature | Acc];
        false -> []
     end.