diff --git a/pybis/src/python/pybis/property.py b/pybis/src/python/pybis/property.py
index d8b084e14129c571da5824de126a441dda356d72..5b74c9b29c9210883f73b1b5a90ef28c85154b27 100644
--- a/pybis/src/python/pybis/property.py
+++ b/pybis/src/python/pybis/property.py
@@ -33,7 +33,6 @@ class PropertyHolder():
             value = getattr(self, code)
             if value is not None:
                 props[code] = value
-
         return props
 
     def __getattr__(self, name):
diff --git a/pybis/src/python/pybis/pybis.py b/pybis/src/python/pybis/pybis.py
index a092ca147469c56165878308390357c756a5c402..4b2b34bbe3cd41d4e0ab00cc81a7fbedcd1de921 100644
--- a/pybis/src/python/pybis/pybis.py
+++ b/pybis/src/python/pybis/pybis.py
@@ -29,7 +29,6 @@ from tabulate import tabulate
 from . import data_set as pbds
 from .utils import parse_jackson, check_datatype, split_identifier, format_timestamp, is_identifier, is_permid, nvl, VERBOSE
 from .utils import extract_attr, extract_permid, extract_code,extract_deletion,extract_identifier,extract_nested_identifier,extract_nested_permid,extract_property_assignments,extract_role_assignments,extract_person, extract_person_details,extract_id,extract_userId
-from .property import PropertyHolder
 from .entity_types import EntityType
 from .vocabulary import Vocabulary, VocabularyTerm
 from .openbis_object import OpenBisObject