diff --git a/libavcodec/cdxl.c b/libavcodec/cdxl.c
index 7e7b7bcd86..468b294865 100644
--- a/libavcodec/cdxl.c
+++ b/libavcodec/cdxl.c
@@ -19,6 +19,12 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+/**
+ * @file
+ * Commodore CDXL video decoder
+ * @author Paul B Mahol
+ */
+
 #define UNCHECKED_BITSTREAM_READER 1
 
 #include "libavutil/intreadwrite.h"