diff --git a/src/edr_pydantic/collections.py b/src/edr_pydantic/collections.py
index f32a347..8525454 100644
--- a/src/edr_pydantic/collections.py
+++ b/src/edr_pydantic/collections.py
@@ -2,7 +2,6 @@
 from typing import List
 from typing import Optional
 
-from .data_queries import CollectionDataQueries
 from .data_queries import DataQueries
 from .extent import Extent
 from .link import Link
@@ -17,7 +16,7 @@ class Collection(EDRBaseModel):
     keywords: Optional[List[str]] = None
     links: List[Link]
     extent: Extent
-    data_queries: Optional[CollectionDataQueries] = None
+    data_queries: Optional[DataQueries] = None
     # TODO According to req A.13 it should be CRSDetails object
     crs: Optional[List[str]] = None
     output_formats: Optional[List[str]] = None
@@ -26,16 +25,16 @@ class Collection(EDRBaseModel):
     distanceunits: Optional[List[str]] = None
 
 
-class CollectionsModel(EDRBaseModel):
+class Collections(EDRBaseModel):
     links: List[Link]
     collections: List[Collection]
 
 
 # For now, the instance metadata corresponds to the first collection metadata. So they have equal classes
 class Instance(Collection):
-    data_queries: Optional[DataQueries] = None
+    pass
 
 
-class InstancesModel(EDRBaseModel):
+class Instances(EDRBaseModel):
     links: List[Link]
     instances: List[Instance]
diff --git a/src/edr_pydantic/data_queries.py b/src/edr_pydantic/data_queries.py
index 8d8791f..18ed305 100644
--- a/src/edr_pydantic/data_queries.py
+++ b/src/edr_pydantic/data_queries.py
@@ -18,6 +18,8 @@ class DataQueries(EDRBaseModel):
     # TODO Difference object/req: item, location?
     locations: Optional[EDRQuery] = None
     items: Optional[EDRQuery] = None
+    # TODO ticket maken en maken voor separation
+    instances: Optional[EDRQuery] = None
 
 
 class CollectionDataQueries(DataQueries):
diff --git a/tests/test_edr.py b/tests/test_edr.py
index c924f2d..f1fc92e 100644
--- a/tests/test_edr.py
+++ b/tests/test_edr.py
@@ -2,13 +2,13 @@
 from pathlib import Path
 
 import pytest
-from edr_pydantic.collections import CollectionsModel
+from edr_pydantic.collections import Collections
 from pydantic import ValidationError
 
 
 happy_cases = [
-    ("knmi-example-collection.json", CollectionsModel),
-    ("doc-example-collection.json", CollectionsModel),
+    ("knmi-example-collection.json", Collections),
+    ("doc-example-collection.json", Collections),
 ]