diff --git a/packages/mongo/collection_async_tests.js b/packages/mongo/collection_async_tests.js
index 9f4f15f9bd..5d3a277fa0 100644
--- a/packages/mongo/collection_async_tests.js
+++ b/packages/mongo/collection_async_tests.js
@@ -1,7 +1,7 @@
 Tinytest.add('async collection - check for methods presence', function (test) {
   const isFunction = fn => test.equal(typeof fn, 'function');
 
-  const collection = new Mongo.Collection('myAsyncCollection');
+  const collection = new Mongo.Collection('myAsyncCollection' + test.id);
   isFunction(collection.createCappedCollectionAsync);
   isFunction(collection.createIndexAsync);
   isFunction(collection.dropCollectionAsync);
diff --git a/packages/mongo/collection_tests.js b/packages/mongo/collection_tests.js
index da34c62792..96b953617e 100644
--- a/packages/mongo/collection_tests.js
+++ b/packages/mongo/collection_tests.js
@@ -159,7 +159,7 @@ Tinytest.add('collection - calling find with a valid readPreference',
     if (Meteor.isServer) {
       const defaultReadPreference = 'primary';
       const customReadPreference = 'secondaryPreferred';
-      const collection = new Mongo.Collection('readPreferenceTest');
+      const collection = new Mongo.Collection('readPreferenceTest' + test.id);
       const defaultCursor = collection.find();
       const customCursor = collection.find(
         {},
@@ -190,7 +190,7 @@ Tinytest.add('collection - calling find with an invalid readPreference',
   function(test) {
     if (Meteor.isServer) {
       const invalidReadPreference = 'INVALID';
-      const collection = new Mongo.Collection('readPreferenceTest2');
+      const collection = new Mongo.Collection('readPreferenceTest2' + test.id);
       const cursor = collection.find(
         {},
         { readPreference: invalidReadPreference }