diff -r 37c3280e6def -r 3dcf565c711e src/pyams_content/features/menu/portlet/navigation/zmi/simple.py
--- a/src/pyams_content/features/menu/portlet/navigation/zmi/simple.py	Thu Jul 12 15:55:45 2018 +0200
+++ b/src/pyams_content/features/menu/portlet/navigation/zmi/simple.py	Thu Jul 12 17:35:20 2018 +0200
@@ -16,7 +16,6 @@
 # import standard library
 
 # import interfaces
-from pyams_content.component.illustration.interfaces import IIllustration, ILinkIllustration
 from pyams_content.component.links.interfaces import IInternalLink
 from pyams_content.features.menu.portlet.navigation.interfaces.simple import ISimpleNavigationPortletSettings, \
     ISimpleNavigationMenu
@@ -89,16 +88,3 @@
             return True
         target = link.get_target()
         return (target is not None) and IWorkflowPublicationInfo(target).is_published()
-
-    @classmethod
-    def get_link_illustration(cls, link):
-        illustration = IIllustration(link, None)
-        if (illustration is None) or not illustration.has_data():
-            if IInternalLink.providedBy(link):
-                target = link.get_target()
-                if target is None:
-                    return
-                illustration = ILinkIllustration(target, None)
-                if (illustration is None) or not illustration.has_data():
-                    illustration = IIllustration(target, None)
-        return illustration