diff --git a/django/contrib/admin/models.py b/django/contrib/admin/models.py
index bade1110c0..a651c7b59c 100644
--- a/django/contrib/admin/models.py
+++ b/django/contrib/admin/models.py
@@ -9,7 +9,7 @@ DELETION = 3
 
 class LogEntryManager(models.Manager):
     def log_action(self, user_id, content_type_id, object_id, object_repr, action_flag, change_message=''):
-        e = self.klass(None, None, user_id, content_type_id, object_id, object_repr[:200], action_flag, change_message)
+        e = self.model(None, None, user_id, content_type_id, object_id, object_repr[:200], action_flag, change_message)
         e.save()
 
 class LogEntry(models.Model):
diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index d78dadddac..7bcc01b0d7 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -32,7 +32,7 @@ def manipulator_validator_unique(f, opts, self, field_data, all_data):
     "Validates that the value is unique for this field."
     lookup_type = f.get_validator_unique_lookup_type()
     try:
-        old_obj = self.manager.get_object(**{lookup_type: field_data})
+        old_obj = self.manager.get(**{lookup_type: field_data})
     except ObjectDoesNotExist:
         return
     if getattr(self, 'original_object', None) and self.original_object._get_pk_val() == old_obj._get_pk_val():