diff --git a/django/middleware/common.py b/django/middleware/common.py
index 07c6ff6679..2252c8f9f0 100644
--- a/django/middleware/common.py
+++ b/django/middleware/common.py
@@ -68,13 +68,13 @@ class CommonMiddleware(object):
                     _is_valid_path("%s/" % request.path_info, urlconf)):
                 new_url[1] = new_url[1] + '/'
                 if settings.DEBUG and request.method == 'POST':
-                    raise RuntimeError, (""
+                    raise RuntimeError((""
                     "You called this URL via POST, but the URL doesn't end "
                     "in a slash and you have APPEND_SLASH set. Django can't "
                     "redirect to the slash URL while maintaining POST data. "
                     "Change your form to point to %s%s (note the trailing "
                     "slash), or set APPEND_SLASH=False in your Django "
-                    "settings.") % (new_url[0], new_url[1])
+                    "settings.") % (new_url[0], new_url[1]))
 
         if new_url == old_url:
             # No redirects required.
diff --git a/django/utils/unittest/case.py b/django/utils/unittest/case.py
index 8d943e2ce0..78507c1917 100644
--- a/django/utils/unittest/case.py
+++ b/django/utils/unittest/case.py
@@ -997,8 +997,7 @@ class TestCase(unittest.TestCase):
                 excName = expected_exception.__name__
             else:
                 excName = str(expected_exception)
-            raise self.failureException, "%s not raised" % excName
-
+            raise self.failureException("%s not raised" % excName)
 
     def assertRegexpMatches(self, text, expected_regexp, msg=None):
         """Fail the test unless the text matches the regular expression."""