diff --git a/django/contrib/staticfiles/storage.py b/django/contrib/staticfiles/storage.py
index d085cf723f..cd4ca516d5 100644
--- a/django/contrib/staticfiles/storage.py
+++ b/django/contrib/staticfiles/storage.py
@@ -202,7 +202,7 @@ class CachedFilesMixin(object):
 
     def post_process(self, paths, dry_run=False, **options):
         """
-        Post process the given list of files (called from collectstatic).
+        Post process the given SortedDict of files (called from collectstatic).
 
         Processing is actually two separate operations: