diff --git a/django/db/models/fields/related.py b/django/db/models/fields/related.py
index 146a1ae457..01f53aa140 100644
--- a/django/db/models/fields/related.py
+++ b/django/db/models/fields/related.py
@@ -728,8 +728,6 @@ class OneToOneField(ForeignKey):
     def contribute_to_related_class(self, cls, related):
         setattr(cls, related.get_accessor_name(),
                 SingleRelatedObjectDescriptor(related))
-        if not cls._meta.one_to_one_field:
-            cls._meta.one_to_one_field = self
 
     def formfield(self, **kwargs):
         if self.rel.parent_link:
diff --git a/django/db/models/options.py b/django/db/models/options.py
index 5d8a7b7104..9e1bfb4ce1 100644
--- a/django/db/models/options.py
+++ b/django/db/models/options.py
@@ -41,7 +41,6 @@ class Options(object):
         self.meta = meta
         self.pk = None
         self.has_auto_field, self.auto_field = False, None
-        self.one_to_one_field = None
         self.abstract = False
         self.parents = SortedDict()
         self.duplicate_targets = {}