diff --git a/packages/minimongo/call_in_observe_test.js b/packages/minimongo/call_in_observe_test.js
index fb0ac4a1ec..9b3f172c08 100644
--- a/packages/minimongo/call_in_observe_test.js
+++ b/packages/minimongo/call_in_observe_test.js
@@ -21,7 +21,7 @@ if (Meteor.isClient) {
       LocalCollection.find().observe({
         added: function () {
           Meteor.call("isRunningOnServer", function (err, res) {
-            test.isFalse(err);
+            test.equal(err, undefined);
             test.equal(res, true);
             done();
           });
diff --git a/packages/minimongo/minimongo.js b/packages/minimongo/minimongo.js
index bc5afdbb70..a1ce954a0c 100644
--- a/packages/minimongo/minimongo.js
+++ b/packages/minimongo/minimongo.js
@@ -372,10 +372,6 @@ _.extend(LocalCollection.Cursor.prototype, {
         // be able to call `Meteor.call` within these wrapped
         // functions and actually end up calling a server method (as
         // opposed to just a client stub)
-        //
-        // XXX this shouldn't be necessary once #2315 is fixed (that
-        // is -- if we no longer run observe callbacks synchronously
-        // on Minimongo mutations).
         var wrapNotInMethodStub = function (f) {
           // It is strange that we refer to the `ddp` package directly
           // here. This pattern appears elsewhere in the code, but