diff --git a/sys/include/net/gcoap.h b/sys/include/net/gcoap.h
index 1c63b765fc55a79ce7c52c168a522e97c7317e48..87bc62772056f1782b57a7aa222a8025e50fb63b 100644
--- a/sys/include/net/gcoap.h
+++ b/sys/include/net/gcoap.h
@@ -30,6 +30,14 @@
  * provides functions to generate and send an observe notification that are
  * similar to the functions to send a client request.
  *
+ * *Contents*
+ *
+ * - Server Operation
+ * - Client Operation
+ * - Observe Server Operation
+ * - Implementation Notes
+ * - Implementation Status
+ *
  * ## Server Operation ##
  *
  * gcoap listens for requests on GCOAP_PORT, 5683 by default. You can redefine