--- a/src/pyams_sequence/schema.py	Mon Jul 09 11:42:45 2018 +0200
+++ b/src/pyams_sequence/schema.py	Thu Jul 12 16:00:06 2018 +0200
@@ -23,33 +23,33 @@
 from zope.schema import TextLine, List
 
 
-class IInternalReference(ITextLine):
+class IInternalReferenceField(ITextLine):
     """Internal reference field interface"""
 
     content_type = Attribute("Requested target content type")
 
 
-@implementer(IInternalReference)
-class InternalReference(TextLine):
+@implementer(IInternalReferenceField)
+class InternalReferenceField(TextLine):
     """Internal reference field"""
 
     def __init__(self, content_type=None, *args, **kwargs):
-        super(InternalReference, self).__init__(*args, **kwargs)
+        super(InternalReferenceField, self).__init__(*args, **kwargs)
         self.content_type = content_type
 
 
-class IInternalReferencesList(IList):
+class IInternalReferencesListField(IList):
     """Internal references list field interface"""
 
     content_type = Attribute("Requested target content type")
 
 
-@implementer(IInternalReferencesList)
-class InternalReferencesList(List):
+@implementer(IInternalReferencesListField)
+class InternalReferencesListField(List):
     """Internal references list field"""
 
     def __init__(self, content_type=None, value_type=None, unique=False, *args, **kwargs):
-        super(InternalReferencesList, self).__init__(value_type=TextLine(),
-                                                     unique=True,
-                                                     *args, **kwargs)
+        super(InternalReferencesListField, self).__init__(value_type=TextLine(),
+                                                          unique=True,
+                                                          *args, **kwargs)
         self.content_type = content_type