diff --git a/include/osmocom/codec/codec.h b/include/osmocom/codec/codec.h
index 3e9b688..3e62a01 100644
--- a/include/osmocom/codec/codec.h
+++ b/include/osmocom/codec/codec.h
@@ -1,3 +1,5 @@
+/*! \file codec.h */
+
 #pragma once
 
 #include <stdint.h>