diff --git a/django/contrib/sites/tests.py b/django/contrib/sites/tests.py
--- a/django/contrib/sites/tests.py
+++ b/django/contrib/sites/tests.py
@@ -9,6 +9,7 @@
 True
 
 >>> s.delete()
+>>> Site.objects.clear_cache()
 >>> Site.objects.get_current()
 Traceback (most recent call last):
 ...
@@ -23,6 +24,7 @@ u"example.com"
 >>> s2 = Site.objects.get(id=settings.SITE_ID)
 >>> s2.name = "Example site"
 >>> s2.save()
+>>> Site.objects.clear_cache()
 >>> site = Site.objects.get_current()
 >>> site.name
 u"Example site"