diff --git a/src/collective/dms/thesaurus/configure.zcml b/src/collective/dms/thesaurus/configure.zcml
index dd42446..699d166 100644
--- a/src/collective/dms/thesaurus/configure.zcml
+++ b/src/collective/dms/thesaurus/configure.zcml
@@ -15,7 +15,6 @@
 
   <include package="plone.app.dexterity" />
   <include package="plone.supermodel" />
-  <include package="plone.app.relationfield" />
   <include package="." />
   <include package=".browser" />
 
diff --git a/src/collective/dms/thesaurus/equivalencesfield.py b/src/collective/dms/thesaurus/equivalencesfield.py
index ddec308..4eccc7c 100644
--- a/src/collective/dms/thesaurus/equivalencesfield.py
+++ b/src/collective/dms/thesaurus/equivalencesfield.py
@@ -12,9 +12,6 @@ from z3c.form.interfaces import IFormLayer, IFieldWidget
 from z3c.form.widget import FieldWidget
 from z3c.form.browser.multi import MultiWidget
 
-#from z3c.relationfield.interfaces import IRelationList
-#from z3c.relationfield.schema import RelationChoice, RelationList
-
 #from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
 
 class IThesaurusKeywordEquivalences(IList):
diff --git a/src/collective/dms/thesaurus/utils.py b/src/collective/dms/thesaurus/utils.py
index d1af596..f042efd 100644
--- a/src/collective/dms/thesaurus/utils.py
+++ b/src/collective/dms/thesaurus/utils.py
@@ -1,7 +1,6 @@
 import json
 
 from zope import component
-from z3c.relationfield import RelationValue
 from Products.Five.browser import BrowserView
 
 from zope.component import getUtility