diff --git a/lib/meteor-down.js b/lib/meteor-down.js
index be180a9..0d14a89 100644
--- a/lib/meteor-down.js
+++ b/lib/meteor-down.js
@@ -21,7 +21,7 @@ Meteor.methods({
     // this does not resume subscriptions and so on, and we don't really need it
     // we do this at the start, so this is fine
     var sessionId = this.connection.id;
-    var session = Meteor.server.sessions[sessionId];
+    var session = Meteor.server.sessions.get(sessionId);
     session.userId = user._id;
 
     return user;
@@ -38,4 +38,4 @@ MeteorDown.login = function (params) {
   if(params.userId) {
     return Meteor.users.findOne(params.userId);
   }
-}
\ No newline at end of file
+}