diff --git a/packages/non-core/mongo-decimal/decimal_tests.js b/packages/non-core/mongo-decimal/decimal_tests.js
index 0f643c9e0b..292a91dd44 100644
--- a/packages/non-core/mongo-decimal/decimal_tests.js
+++ b/packages/non-core/mongo-decimal/decimal_tests.js
@@ -1,9 +1,9 @@
-Tinytest.add('mongo-decimal - insert/find Decimal', function (test) {
+Tinytest.addAsync('mongo-decimal - insert/find Decimal', async function (test) {
   var coll = new Mongo.Collection('mongo-decimal');
   var pi = Decimal('3.141592653589793');
 
-  coll.insert({pi: pi});
-  var found = coll.findOne({pi: pi});
+  await coll.insertAsync({pi: pi});
+  var found = await coll.findOneAsync({pi: pi});
 
   test.equal(found.pi, pi);
 });