diff --git a/src/plugins/plugin_misc_invitations.py b/src/plugins/plugin_misc_invitations.py
index 216cddc6..534c285d 100644
--- a/src/plugins/plugin_misc_invitations.py
+++ b/src/plugins/plugin_misc_invitations.py
@@ -112,7 +112,7 @@ class InvitationsPlugin(object):
                 use None if you don't want to include URL (or if it is already specified in custom message)
                 /!\ you must put full URL, don't forget https://
                 /!\ the URL will give access to the invitee account, you should warn in message to not publish it publicly
-            message_subject(unicode, None): customised message body for t:o he invitation email
+            message_subject(unicode, None): customised message body for the invitation email
                 None to use default subject
                 uses the same substitution as for message_body
             message_body(unicode, None): customised message body for the invitation email
@@ -143,6 +143,10 @@ class InvitationsPlugin(object):
             raise exceptions.ValueError(_(u"You can't use following key(s) in extra, they are reserved: {}").format(
                 u', '.join(EXTRA_RESERVED.intersection(extra))))
 
+        if not 'url_template' in extra and not 'message_body' in extra:
+            raise ValueError(_(u"You need to provide url_template if you use default message body"))
+
+
         ## uuid
         log.info(_(u"creating an invitation"))
         id_ = unicode(shortuuid.uuid())