diff --git a/include/osmocom/gprs/gprs_ns_frgre.h b/include/osmocom/gprs/gprs_ns_frgre.h
index 72ef7d1..d48ce08 100644
--- a/include/osmocom/gprs/gprs_ns_frgre.h
+++ b/include/osmocom/gprs/gprs_ns_frgre.h
@@ -1,3 +1,5 @@
+/*! \file gprs_ns_frgre.h */
+
 #pragma once
 
 int gprs_ns_frgre_sendmsg(struct gprs_nsvc *nsvc, struct msgb *msg);