diff --git a/src/yandex_cloud_ml_sdk/_search_indexes/file.py b/src/yandex_cloud_ml_sdk/_search_indexes/file.py
index 84ae646..5b4bfde 100644
--- a/src/yandex_cloud_ml_sdk/_search_indexes/file.py
+++ b/src/yandex_cloud_ml_sdk/_search_indexes/file.py
@@ -3,34 +3,12 @@
 
 from dataclasses import dataclass
 from datetime import datetime
-from typing import TYPE_CHECKING, Any
-
-from yandex.cloud.ai.assistants.v1.searchindex.search_index_file_pb2 import SearchIndexFile as ProtoSearchIndexFile
 
 from yandex_cloud_ml_sdk._types.resource import BaseResource
 
-from .chunking_strategy import BaseIndexChunkingStrategy
-
-if TYPE_CHECKING:
-    from yandex_cloud_ml_sdk._sdk import BaseSDK
-
 
 @dataclass(frozen=True)
 class SearchIndexFile(BaseResource):
     search_index_id: str
     created_by: str
     created_at: datetime
-    chunking_strategy: BaseIndexChunkingStrategy
-
-    @classmethod
-    def _kwargs_from_message(
-        cls,
-        proto: ProtoSearchIndexFile,  # type: ignore[override]
-        sdk: BaseSDK
-    ) -> dict[str, Any]:
-        kwargs = super()._kwargs_from_message(proto, sdk=sdk)
-        # pylint: disable=protected-access
-        kwargs['chunking_strategy'] = BaseIndexChunkingStrategy._from_upper_proto(
-            proto=proto.chunking_strategy, sdk=sdk
-        )
-        return kwargs