--- a/src/pyams_form/form.py	Fri Jun 08 14:51:03 2018 +0200
+++ b/src/pyams_form/form.py	Sat Jun 09 00:44:54 2018 +0200
@@ -9,7 +9,6 @@
 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
 # FOR A PARTICULAR PURPOSE.
 #
-from zope.interface.declarations import classImplements
 
 __docformat__ = 'restructuredtext'
 
@@ -51,7 +50,7 @@
 from z3c.form.form import applyChanges, \
     Form, AddForm as BaseAddForm, EditForm as BaseEditForm, DisplayForm as BaseDisplayForm
 from zope.component import queryUtility
-from zope.interface import implementer, alsoProvides, Interface
+from zope.interface import implementer, classImplements, alsoProvides, Interface
 from zope.lifecycleevent import Attributes, ObjectCreatedEvent
 from zope.location import locate
 from zope.schema.fieldproperty import FieldProperty