diff --git a/packages/mongo-livedata/collection.js b/packages/mongo-livedata/collection.js
index 08b3b27a1f..4eac2acd32 100644
--- a/packages/mongo-livedata/collection.js
+++ b/packages/mongo-livedata/collection.js
@@ -207,12 +207,12 @@ _.extend(Meteor.Collection.prototype, {
     if (args.length < 2) {
       return { transform: self._transform };
     } else {
-      check(args[1], Match.ObjectIncluding({
+      check(args[1], Match.Optional(Match.ObjectIncluding({
         fields: Match.Optional(Object),
         sort: Match.Optional(Match.OneOf(Object, Array)),
         limit: Match.Optional(Number),
         skip: Match.Optional(Number)
-      }));
+      })));
 
       return _.extend({
         transform: self._transform