diff --git a/django/middleware/common.py b/django/middleware/common.py
index 0bf0481df6..0531d31908 100644
--- a/django/middleware/common.py
+++ b/django/middleware/common.py
@@ -75,14 +75,14 @@ class CommonMiddleware(object):
             if (not urlresolvers.is_valid_path(request.path_info, urlconf) and
                     urlresolvers.is_valid_path("%s/" % request.path_info, urlconf)):
                 new_url[1] = new_url[1] + '/'
-                if settings.DEBUG and request.method == 'POST':
+                if settings.DEBUG and request.method in ('POST', 'PUT', 'PATCH'):
                     raise RuntimeError((""
-                    "You called this URL via POST, but the URL doesn't end "
+                    "You called this URL via %(method)s, 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 "
+                    "redirect to the slash URL while maintaining %(method)s data. "
+                    "Change your form to point to %(url)s (note the trailing "
                     "slash), or set APPEND_SLASH=False in your Django "
-                    "settings.") % (new_url[0], new_url[1]))
+                    "settings.") % {'method': request.method, 'url': ''.join(new_url)})
 
         if new_url == old_url:
             # No redirects required.
diff --git a/tests/middleware/tests.py b/tests/middleware/tests.py
index 2b5b50f9e5..30ed394503 100644
--- a/tests/middleware/tests.py
+++ b/tests/middleware/tests.py
@@ -68,12 +68,21 @@ class CommonMiddlewareTest(TestCase):
     def test_append_slash_no_redirect_on_POST_in_DEBUG(self):
         """
         Tests that while in debug mode, an exception is raised with a warning
-        when a failed attempt is made to POST to an URL which would normally be
-        redirected to a slashed version.
+        when a failed attempt is made to POST, PUT, or PATCH to an URL which
+        would normally be redirected to a slashed version.
         """
+        msg = "maintaining %s data. Change your form to point to testserver/slash/"
         request = self.rf.get('/slash')
         request.method = 'POST'
-        with six.assertRaisesRegex(self, RuntimeError, 'end in a slash'):
+        with six.assertRaisesRegex(self, RuntimeError, msg % request.method):
+            CommonMiddleware().process_request(request)
+        request = self.rf.get('/slash')
+        request.method = 'PUT'
+        with six.assertRaisesRegex(self, RuntimeError, msg % request.method):
+            CommonMiddleware().process_request(request)
+        request = self.rf.get('/slash')
+        request.method = 'PATCH'
+        with six.assertRaisesRegex(self, RuntimeError, msg % request.method):
             CommonMiddleware().process_request(request)
 
     @override_settings(APPEND_SLASH=False)