diff --git a/docs/api.rst b/docs/api.rst
index 28d981f89..7271209eb 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -1275,7 +1275,7 @@ Liveliness
 ========================
 Types
 -----
-.. autoctype:: liveliness.h::z_liveliness_token_options_t_t
+.. autoctype:: liveliness.h::z_liveliness_token_options_t
 .. autoctype:: liveliness.h::z_liveliness_subscriber_options_t
 .. autoctype:: liveliness.h::z_liveliness_get_options_t
 
diff --git a/include/zenoh-pico/api/liveliness.h b/include/zenoh-pico/api/liveliness.h
index 4fa62bb46..43e3012fc 100644
--- a/include/zenoh-pico/api/liveliness.h
+++ b/include/zenoh-pico/api/liveliness.h
@@ -41,14 +41,14 @@ _Z_OWNED_FUNCTIONS_DEF(liveliness_token)
 /**
  * The options for :c:func:`z_liveliness_declare_token()`.
  */
-typedef struct z_liveliness_token_options_t_t {
+typedef struct z_liveliness_token_options_t {
     uint8_t __dummy;
-} z_liveliness_token_options_t_t;
+} z_liveliness_token_options_t;
 
 /**
- * Constructs default value for :c:type:`z_liveliness_token_options_t_t`.
+ * Constructs default value for :c:type:`z_liveliness_token_options_t`.
  */
-z_result_t z_liveliness_token_options_t_default(z_liveliness_token_options_t_t *options);
+z_result_t z_liveliness_token_options_t_default(z_liveliness_token_options_t *options);
 
 /**
  * Constructs and declares a liveliness token on the network.
@@ -66,7 +66,7 @@ z_result_t z_liveliness_token_options_t_default(z_liveliness_token_options_t_t *
  *   ``0`` if put operation is successful, ``negative value`` otherwise.
  */
 z_result_t z_liveliness_declare_token(const z_loaned_session_t *zs, z_owned_liveliness_token_t *token,
-                                      const z_loaned_keyexpr_t *keyexpr, const z_liveliness_token_options_t_t *options);
+                                      const z_loaned_keyexpr_t *keyexpr, const z_liveliness_token_options_t *options);
 
 /**
  * Undeclare a liveliness token, notifying subscribers of its destruction.
diff --git a/src/api/liveliness.c b/src/api/liveliness.c
index 3dcbac5f1..4f4139396 100644
--- a/src/api/liveliness.c
+++ b/src/api/liveliness.c
@@ -48,14 +48,13 @@ void _z_liveliness_token_clear(_z_liveliness_token_t *token) {
 _Z_OWNED_FUNCTIONS_VALUE_NO_COPY_IMPL(_z_liveliness_token_t, liveliness_token, _z_liveliness_token_check,
                                       _z_liveliness_token_null, _z_liveliness_token_clear)
 
-z_result_t z_liveliness_token_options_t_default(z_liveliness_token_options_t_t *options) {
+z_result_t z_liveliness_token_options_t_default(z_liveliness_token_options_t *options) {
     options->__dummy = 0;
     return _Z_RES_OK;
 }
 
 z_result_t z_liveliness_declare_token(const z_loaned_session_t *zs, z_owned_liveliness_token_t *token,
-                                      const z_loaned_keyexpr_t *keyexpr,
-                                      const z_liveliness_token_options_t_t *options) {
+                                      const z_loaned_keyexpr_t *keyexpr, const z_liveliness_token_options_t *options) {
     (void)options;
 
     _z_keyexpr_t key = _z_update_keyexpr_to_declared(_Z_RC_IN_VAL(zs), *keyexpr);
diff --git a/src/net/liveliness.c b/src/net/liveliness.c
index ae8ed05ad..19dbfb8f9 100644
--- a/src/net/liveliness.c
+++ b/src/net/liveliness.c
@@ -13,6 +13,8 @@
 
 #include "zenoh-pico/api/liveliness.h"
 
+#include "zenoh-pico/net/primitives.h"
+#include "zenoh-pico/protocol/definitions/interest.h"
 #include "zenoh-pico/protocol/definitions/network.h"
 #include "zenoh-pico/protocol/keyexpr.h"
 #include "zenoh-pico/session/resource.h"
@@ -112,6 +114,15 @@ z_result_t _z_undeclare_liveliness_subscriber(_z_subscriber_t *sub) {
         return _Z_ERR_ENTITY_UNKNOWN;
     }
 
+    _z_interest_t interest = _z_make_interest(NULL, s->_val->_id, 0);
+    _z_network_message_t n_msg = _z_n_msg_make_interest(interest);
+    if (_z_send_n_msg(_Z_RC_IN_VAL(&sub->_zn), &n_msg, Z_RELIABILITY_RELIABLE, Z_CONGESTION_CONTROL_BLOCK) !=
+        _Z_RES_OK) {
+        return _Z_ERR_TRANSPORT_TX_FAILED;
+    }
+    _z_n_msg_clear(&n_msg);
+
+    _z_undeclare_resource(_Z_RC_IN_VAL(&sub->_zn), _Z_RC_IN_VAL(s)->_key_id);
     _z_unregister_subscription(_Z_RC_IN_VAL(&sub->_zn), _Z_SUBSCRIBER_KIND_LIVELINESS_SUBSCRIBER, s);
     return _Z_RES_OK;
 }