diff --git a/mongo-migrations/breakpoints.js b/mongo-migrations/breakpoints.js
index fa8a59af4e..1831706139 100644
--- a/mongo-migrations/breakpoints.js
+++ b/mongo-migrations/breakpoints.js
@@ -8,7 +8,7 @@ let migrateTree = () => {
       print(`migrating ${instance.id}`);
       instance.cssRules = [
         {
-          breakpoint: ObjectId("626fc63909a681e2a912b5a4"),
+          breakpoint: "626fc63909a681e2a912b5a4",
           style: instance.style,
         },
       ];