diff --git a/themis/libellioimport/migration.py b/themis/libellioimport/migration.py
index 31e028b..71fba2a 100644
--- a/themis/libellioimport/migration.py
+++ b/themis/libellioimport/migration.py
@@ -9,7 +9,10 @@ from Products.Five.browser import BrowserView
 from Products.CMFCore.utils import getToolByName
 from plone.dexterity.factory import DexterityFactory
 from plone.dexterity.utils import addContentToContainer
-from plone.namedfile.file import NamedFile
+try:
+    from plone.namedfile.file import NamedBlobFile as NamedFile
+except ImportError:
+    from plone.namedfile.file import NamedFile
 from Products.CMFCore.WorkflowCore import WorkflowException
 
 class Migrate(BrowserView):