diff --git a/ejabberd.yml.example b/ejabberd.yml.example
index dae839fdc..ceea11e52 100644
--- a/ejabberd.yml.example
+++ b/ejabberd.yml.example
@@ -668,6 +668,10 @@ modules:
   mod_vcard:
     search: false
   mod_version: {}
+  # Since 17.02 S2S Dialback (XEP-0220) and Stream Management (XEP-0198)
+  # are implemented in modules
+  mod_s2s_dialback: {}
+  mod_sm: {}
 
 ##
 ## Enable modules with custom options in a specific virtual host