diff --git a/doc/main.md b/doc/main.md
index aa0fd61dcc..6f44a48b26 100644
--- a/doc/main.md
+++ b/doc/main.md
@@ -46,7 +46,7 @@ The following RFCs are supported
 
 * [RFC9175: CoAP: Echo, Request-Tag, and Token Processing](https://rfc-editor.org/rfc/rfc9175)
 
-* [RFC9177: Constrained Application Protocol (CoAP) Block-Wise Transfer Options Supporting Robust Transmission[(https://rfc-editor.org/rfc/rfc9177)
+* [RFC9177: Constrained Application Protocol (CoAP) Block-Wise Transfer Options Supporting Robust Transmission](https://rfc-editor.org/rfc/rfc9177)
 
 There is (D)TLS support for the following libraries
 
diff --git a/include/coap3/coap_tcp_internal.h b/include/coap3/coap_tcp_internal.h
index 87558da123..e14a927abb 100644
--- a/include/coap3/coap_tcp_internal.h
+++ b/include/coap3/coap_tcp_internal.h
@@ -23,7 +23,7 @@
 /**
  * @ingroup internal_api
  * @defgroup tcp TCP Support
- * Internal API for handling CoAP TCP (RFC8283)
+ * Internal API for handling CoAP TCP (RFC8323)
  * @{
  */
 
diff --git a/include/coap3/coap_ws.h b/include/coap3/coap_ws.h
index c039b034c8..b61bf713fe 100644
--- a/include/coap3/coap_ws.h
+++ b/include/coap3/coap_ws.h
@@ -21,7 +21,7 @@
 /**
  * @ingroup application_api
  * @defgroup ws WebSockets Support
- * API for interfacing with WebSockets
+ * API for interfacing with WebSockets (RFC8323)
  * @{
  */
 
diff --git a/include/coap3/coap_ws_internal.h b/include/coap3/coap_ws_internal.h
index 85a630e417..3c8101dde4 100644
--- a/include/coap3/coap_ws_internal.h
+++ b/include/coap3/coap_ws_internal.h
@@ -23,7 +23,7 @@
 /**
  * @ingroup internal_api
  * @defgroup ws_internal WebSockets Support
- * Internal API for WebSockets Support
+ * Internal API for WebSockets Support (RFC8323)
  * @{
  */