diff --git a/adapter-mongodb/src/main/java/io/nosqlbench/adapter/mongodb/MongoDbUtils.java b/adapter-mongodb/src/main/java/io/nosqlbench/adapter/mongodb/MongoDbUtils.java
index 853b1dbfa..62f4d113a 100644
--- a/adapter-mongodb/src/main/java/io/nosqlbench/adapter/mongodb/MongoDbUtils.java
+++ b/adapter-mongodb/src/main/java/io/nosqlbench/adapter/mongodb/MongoDbUtils.java
@@ -1,5 +1,6 @@
 package io.nosqlbench.adapter.mongodb;
 
+import com.mongodb.client.MongoCursor;
 import org.bson.Document;
 
 import java.util.ArrayList;
@@ -7,9 +8,10 @@ import java.util.List;
 
 public class MongoDbUtils {
     public static int[] getFieldFromResults(String field, Document document) {
-        List<Document> value = document.getList(field, Document.class);
+        Document _cursor = document.get("cursor", Document.class);
+        List<Document> _firstBatch = _cursor.getList("firstBatch", Document.class);
         List<String> keyStrings = new ArrayList<>();
-        for (Document matchingVector : value) {
+        for (Document matchingVector : _firstBatch) {
             keyStrings.add(matchingVector.get("key",String.class));
         }
         return keyStrings.stream().mapToInt(Integer::parseInt).toArray();