diff --git a/clients/python/src/osparc/_api_files_api.py b/clients/python/src/osparc/_api_files_api.py
index 262a20ec..965c6bf0 100644
--- a/clients/python/src/osparc/_api_files_api.py
+++ b/clients/python/src/osparc/_api_files_api.py
@@ -272,11 +272,15 @@ def _search_files(
         sha256_checksum: Optional[str] = None,
         timeout_seconds: int = DEFAULT_TIMEOUT_SECONDS,
     ) -> PaginationIterator:
+        kwargs = {
+            "file_id": file_id,
+            "sha256_checksum": sha256_checksum,
+            "_request_timeout": timeout_seconds,
+        }
+
         def _pagination_method():
             return super(FilesApi, self).search_files_page(
-                file_id=file_id,
-                sha256_checksum=sha256_checksum,
-                _request_timeout=timeout_seconds,
+                **{k: v for k, v in kwargs.items() if v is not None}
             )
 
         return PaginationIterator(
diff --git a/clients/python/test/e2e/test_files_api.py b/clients/python/test/e2e/test_files_api.py
index 5a292a2c..3b6675f7 100644
--- a/clients/python/test/e2e/test_files_api.py
+++ b/clients/python/test/e2e/test_files_api.py
@@ -85,9 +85,10 @@ def max_diff(data: List[int]) -> int:
     assert _hash_file(Path(downloaded_file)) == _hash_file(large_server_file.local_file)
 
 
-@skip_if_osparc_version(at_least=Version("0.8.0"))
-@pytest.mark.parametrize("use_checksum", [True, False])
-@pytest.mark.parametrize("use_id", [True, False])
+@skip_if_osparc_version(at_least=Version("0.8.3.post0.dev20"))
+@pytest.mark.parametrize(
+    "use_checksum,use_id", [(True, True), (False, True), (True, False)]
+)
 def test_search_files(
     large_server_file: Callable[[ByteSize], Path],
     files_api: osparc.FilesApi,