diff --git a/feed.go b/feed.go
index b29ecf8..fb64a03 100644
--- a/feed.go
+++ b/feed.go
@@ -101,7 +101,7 @@ func (f *Feed) AddEntry(e *Entry) {
 	}
 }
 
-// Check checks the feed for incompatibilities with the Atom standard.
+// Check checks the feed for incompatibilities with RFC4287.
 func (f *Feed) Check() error {
 	if f.ID == nil {
 		return errors.New("no id element of feed")