diff --git a/codec/h265/lex.go b/codec/h265/lex.go
index 8cbfb400..fb7c0a88 100644
--- a/codec/h265/lex.go
+++ b/codec/h265/lex.go
@@ -25,6 +25,8 @@ LICENSE
   in gpl.txt.  If not, see http://www.gnu.org/licenses.
 */
 
+// Package h265 provides an RTP h265 lexer that can extract h265 access units
+// from an RTP stream.
 package h265
 
 import (