diff --git a/jobfile-osm-boundaries.js b/jobfile-osm-boundaries.js
index d6b40af..019161f 100644
--- a/jobfile-osm-boundaries.js
+++ b/jobfile-osm-boundaries.js
@@ -82,6 +82,7 @@ export default {
         writeMongoCollection: {
           chunkSize: 256,
           collection,
+          checkKeys: false
         },
         /*copyToStore: {
           input: { key: `<%= key %>.geojson`, store: 'fs' },