diff --git a/src/gsm/gsm0341.c b/src/gsm/gsm0341.c
index 0e3e453..05a0b4a 100644
--- a/src/gsm/gsm0341.c
+++ b/src/gsm/gsm0341.c
@@ -1,3 +1,4 @@
+/*! \file gsm0341.c */
 /*
  * (C) 2014 by Harald Welte <laforge@gnumonks.org>
  * All Rights Reserved