Index: django/contrib/admin/options.py
===================================================================
--- django/contrib/admin/options.py	(revision 16855)
+++ django/contrib/admin/options.py	(working copy)
@@ -672,12 +672,12 @@
         change_message = ' '.join(change_message)
         return change_message or _('No fields changed.')
 
-    def message_user(self, request, message):
+    def message_user(self, request, message, level=messages.INFO):
         """
         Send a message to the user. The default implementation
         posts a message using the django.contrib.messages backend.
         """
-        messages.info(request, message)
+        messages.add_message(request, level, message)
 
     def save_form(self, request, form, change):
         """