diff --git a/src/main/java/com/microsoft/graph/serializer/DefaultSerializer.java b/src/main/java/com/microsoft/graph/serializer/DefaultSerializer.java
index 29ca08f7bc5..cb4fd614ee2 100644
--- a/src/main/java/com/microsoft/graph/serializer/DefaultSerializer.java
+++ b/src/main/java/com/microsoft/graph/serializer/DefaultSerializer.java
@@ -25,12 +25,13 @@
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.CaseFormat;
 import com.google.gson.Gson;
+import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.microsoft.graph.logger.ILogger;
-
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 
@@ -123,7 +124,6 @@ private void setChildAdditionalData(IJsonBackedObject serializedObject, JsonObje
 
                 // If the object is a HashMap, iterate through its children
                 if (fieldObject instanceof HashMap) {
-                    @SuppressWarnings("unchecked")
                     HashMap<String, Object> serializableChildren = (HashMap<String, Object>) fieldObject;
                     Iterator<Entry<String, Object>> it = serializableChildren.entrySet().iterator();
 
@@ -142,6 +142,21 @@ private void setChildAdditionalData(IJsonBackedObject serializedObject, JsonObje
                         }
                     }
                 }
+                // If the object is a list of Graph objects, iterate through elements
+                else if (fieldObject instanceof List && rawJson != null) {
+                    final JsonElement collectionJson = rawJson.get(field.getName());
+                    final List<?> fieldObjectList = (List<?>) fieldObject;
+                    if (collectionJson.isJsonArray() && ((JsonArray)collectionJson).size() == fieldObjectList.size()) {
+                        final JsonArray rawJsonArray = (JsonArray) collectionJson;
+                        for (int i = 0; i < fieldObjectList.size(); i++) {
+                            final Object element = fieldObjectList.get(i);
+                            if (element instanceof IJsonBackedObject) {
+                                final JsonElement elementRawJson = rawJsonArray.get(i);
+                                setChildAdditionalData((IJsonBackedObject) element, elementRawJson.getAsJsonObject());
+                            }
+                        }
+                    }
+                }
                 // If the object is a valid Graph object, set its additional data
                 else if (fieldObject != null && fieldObject instanceof IJsonBackedObject) {
                     IJsonBackedObject serializedChild = (IJsonBackedObject) fieldObject;
diff --git a/src/test/java/com/microsoft/graph/serializer/DefaultSerializerTests.java b/src/test/java/com/microsoft/graph/serializer/DefaultSerializerTests.java
index e5590d238f8..6085bc5a5e3 100644
--- a/src/test/java/com/microsoft/graph/serializer/DefaultSerializerTests.java
+++ b/src/test/java/com/microsoft/graph/serializer/DefaultSerializerTests.java
@@ -3,8 +3,6 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 
-import org.junit.Test;
-
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.annotations.Expose;
@@ -15,9 +13,11 @@
 import com.microsoft.graph.models.extensions.DateOnly;
 import com.microsoft.graph.models.extensions.Drive;
 import com.microsoft.graph.models.extensions.FileAttachment;
-import com.microsoft.graph.models.extensions.User;
 import com.microsoft.graph.models.extensions.RecurrenceRange;
+import com.microsoft.graph.models.extensions.User;
 import com.microsoft.graph.models.generated.RecurrenceRangeType;
+import com.microsoft.graph.requests.extensions.DriveItemDeltaCollectionResponse;
+import org.junit.Test;
 
 public class DefaultSerializerTests {
 
@@ -26,7 +26,7 @@ public class DefaultSerializerTests {
      *
      * @throws Exception If there is an exception during the test
      */
-	@Test
+    @Test
     public void testDriveDeserialization() throws Exception {
         final DefaultSerializer serializer = new DefaultSerializer(new DefaultLogger());
         String source = "{\"@odata.context\":\"https://graph.microsoft.com/v1.0/$metadata#drives/$entity\",\"id\":\"8bf6ae90006c4a4c\",\"driveType\":\"personal\",\"owner\":{\"user\":{\"displayName\":\"Peter\",\"id\":\"8bf6ae90006c4a4c\"}},\"quota\":{\"deleted\":1485718314,\"remaining\":983887466461,\"state\":\"normal\",\"total\":1142461300736,\"used\":158573834275}}";
@@ -38,6 +38,43 @@ public void testDriveDeserialization() throws Exception {
 
     }
 
+    /**
+     * Make sure that deserializing a DriveItems also deserializes child additionalData
+     *
+     * @throws Exception If there is an exception during the test
+     */
+    @Test
+    public void testDriveItemChildAdditionalDataDeserialization() throws Exception {
+        final DefaultSerializer serializer = new DefaultSerializer(new DefaultLogger());
+        String source = "{\n"
+                + "    \"@odata.context\": \"https://graph.microsoft.com/v1.0/$metadata#users('02008492-3fec-4ce4-bb54-980ad856856f')/drive/root/children\",\n"
+                + "    \"value\": [\n"
+                + "        {\n"
+                + "            \"createdBy\": {\n"
+                + "                \"user\": {\n"
+                + "                    \"email\": \"the@email.com\",\n"
+                + "                    \"id\": \"02008492-3fec-4ce4-bb54-980ad856856f\",\n"
+                + "                    \"displayName\": \"John Doe\"\n"
+                + "                }\n"
+                + "            }\n"
+                + "        }\n"
+                + "    ]\n"
+                + "}";
+
+        DriveItemDeltaCollectionResponse result = serializer
+                .deserializeObject(source, DriveItemDeltaCollectionResponse.class);
+        assertNotNull(result);
+        assertNotNull(result.value);
+        assertEquals(1, result.value.size());
+        assertNotNull(result.value.get(0));
+        assertNotNull(result.value.get(0).createdBy);
+        assertNotNull(result.value.get(0).createdBy.user);
+        assertNotNull(result.value.get(0).createdBy.user.additionalDataManager());
+        assertNotNull(result.value.get(0).createdBy.user.additionalDataManager().get("email"));
+        assertEquals("the@email.com",
+                result.value.get(0).createdBy.user.additionalDataManager().get("email").getAsString());
+    }
+
 	@Test
     public void testRecurrenceRangeDeserialization() throws Exception {
         final DefaultSerializer serializer = new DefaultSerializer(new DefaultLogger());