--- a/src/pyams_content/component/illustration/__init__.py	Thu Sep 06 17:43:49 2018 +0200
+++ b/src/pyams_content/component/illustration/__init__.py	Fri Sep 07 16:40:05 2018 +0200
@@ -15,21 +15,28 @@
 
 # import standard library
 
+# import packages
+from persistent import Persistent
+from pyramid.events import subscriber
+from pyramid.threadlocal import get_current_registry
+from zope.container.contained import Contained
+from zope.interface import implementer, alsoProvides
+from zope.lifecycleevent import ObjectAddedEvent
+from zope.lifecycleevent.interfaces import IObjectAddedEvent, IObjectModifiedEvent
+from zope.location.interfaces import ISublocations
+from zope.schema.fieldproperty import FieldProperty
+from zope.traversing.interfaces import ITraversable
+
+from pyams_content import _
 # import interfaces
 from pyams_content.component.illustration.interfaces import IIllustration, IIllustrationTarget, \
     ILLUSTRATION_KEY, ILLUSTRATION_RENDERERS, IBasicIllustration, IBasicIllustrationTarget, BASIC_ILLUSTRATION_KEY, \
     ILinkIllustrationTarget, LINK_ILLUSTRATION_KEY, ILinkIllustration
+from pyams_content.features.checker import BaseContentChecker
 from pyams_content.features.checker.interfaces import IContentChecker, MISSING_VALUE, MISSING_LANG_VALUE
+from pyams_content.features.renderer import RenderedContentMixin, RenderersVocabulary
 from pyams_file.interfaces import IFileInfo, IImage, IResponsiveImage
 from pyams_i18n.interfaces import INegotiator, II18n, II18nManager
-from zope.lifecycleevent.interfaces import IObjectAddedEvent, IObjectModifiedEvent
-from zope.location.interfaces import ISublocations
-from zope.traversing.interfaces import ITraversable
-
-# import packages
-from persistent import Persistent
-from pyams_content.features.checker import BaseContentChecker
-from pyams_content.features.renderer import RenderedContentMixin, RenderersVocabulary
 from pyams_i18n.property import I18nFileProperty
 from pyams_utils.adapter import adapter_config, ContextAdapter, get_annotation_adapter
 from pyams_utils.factory import factory_config
@@ -37,14 +44,6 @@
 from pyams_utils.request import check_request
 from pyams_utils.traversing import get_parent
 from pyams_utils.vocabulary import vocabulary_config
-from pyramid.events import subscriber
-from pyramid.threadlocal import get_current_registry
-from zope.container.contained import Contained
-from zope.interface import implementer, alsoProvides
-from zope.lifecycleevent import ObjectCreatedEvent, ObjectAddedEvent
-from zope.schema.fieldproperty import FieldProperty
-
-from pyams_content import _
 
 
 @implementer(IBasicIllustration)
@@ -52,9 +51,10 @@
 class BasicIllustration(Persistent, Contained):
     """Illustration persistent class"""
 
-    _data = I18nFileProperty(IIllustration['data'])
-    title = FieldProperty(IIllustration['title'])
-    alt_title = FieldProperty(IIllustration['alt_title'])
+    _data = I18nFileProperty(IBasicIllustration['data'])
+    title = FieldProperty(IBasicIllustration['title'])
+    alt_title = FieldProperty(IBasicIllustration['alt_title'])
+    author = FieldProperty(IBasicIllustration['author'])
 
     @property
     def data(self):
@@ -94,7 +94,6 @@
     """Illustration persistent class"""
 
     description = FieldProperty(IIllustration['description'])
-    author = FieldProperty(IIllustration['author'])
     renderer = FieldProperty(IIllustration['renderer'])