diff --git a/openprocurement_client/client.py b/openprocurement_client/client.py
index baa6d68..48118f0 100644
--- a/openprocurement_client/client.py
+++ b/openprocurement_client/client.py
@@ -1,13 +1,21 @@
+import logging
 from functools import wraps
+from io import FileIO
+from os import path
+from urlparse import parse_qs, urlparse
+
 from iso8601 import parse_date
+
 from munch import munchify
-from restkit import BasicAuth, request, Resource
+
+from restkit import BasicAuth, Resource, request
 from restkit.errors import ResourceNotFound
+
 from retrying import retry
+
 from simplejson import dumps, loads
-from urlparse import parse_qs, urlparse
-import logging
-from openprocurement_client.exceptions import InvalidResponse, NoToken
+
+from .exceptions import InvalidResponse, NoToken
 
 logger = logging.getLogger(__name__)
 
@@ -18,7 +26,23 @@ def verify_file(fn):
     @wraps(fn)
     def wrapper(self, file_, *args, **kwargs):
         if isinstance(file_, str):
-            file_ = open(file_, 'rb')
+            # Using FileIO here instead of open()
+            # to be able to override the filename
+            # which is later used when uploading the file.
+            #
+            # Explanation:
+            #
+            # 1) Restkit reads the filename
+            # from "name" attribute of a file-like object,
+            # there is no other way to specify a filename;
+            #
+            # 2) The attribute may contain the full path to file,
+            # which does not work well as a filename;
+            #
+            # 3) The attribute is readonly when using open(),
+            # unlike FileIO object.
+            file_ = FileIO(file_, 'rb')
+            file_.name = path.basename(file_.name)
         if hasattr(file_, 'read'):
             # A file-like object must have 'read' method
             return fn(self, file_, *args, **kwargs)
@@ -140,6 +164,7 @@ def _delete_resource_item(self, url, headers={}):
             return munchify(loads(response_item.body_string()))
         raise InvalidResponse
 
+
 class TendersClient(APIBaseClient):
     """client for tenders"""
 
@@ -148,7 +173,7 @@ def __init__(self, key,
                  api_version='2.0',
                  params=None,
                  resource='tenders'):
-        super(TendersClient, self).__init__(key, host_url,api_version, resource, params)
+        super(TendersClient, self).__init__(key, host_url, api_version, resource, params)
 
     ###########################################################################
     #             GET ITEMS LIST API METHODS
@@ -546,6 +571,7 @@ def delete_lot(self, tender, lot):
         )
     ###########################################################################
 
+
 class Client(TendersClient):
     """client for tenders for backward compatibility"""