diff --git a/src/sercomm.c b/src/sercomm.c
index 2f693ef..33d4853 100644
--- a/src/sercomm.c
+++ b/src/sercomm.c
@@ -22,6 +22,7 @@
 
 /*! \addtogroup sercomm
  *  @{
+ *  \brief Serial communications layer, based on HDLC
  */
 
 /*! \file sercomm.c