diff --git a/src/session/rx.c b/src/session/rx.c
index c9590c46b..b99c3d162 100644
--- a/src/session/rx.c
+++ b/src/session/rx.c
@@ -20,6 +20,7 @@
 #include "zenoh-pico/api/types.h"
 #include "zenoh-pico/collections/bytes.h"
 #include "zenoh-pico/protocol/core.h"
+#include "zenoh-pico/protocol/definitions/declarations.h"
 #include "zenoh-pico/protocol/definitions/message.h"
 #include "zenoh-pico/protocol/definitions/network.h"
 #include "zenoh-pico/protocol/keyexpr.h"
@@ -130,7 +131,7 @@ int8_t _z_handle_zenoh_message(_z_session_t *zn, _z_zenoh_message_t *msg, uint16
                     // @TODO: expose errors to the user
                     _z_msg_err_t error = response._body._err;
                     _z_bytes_t payload = error._ext_value.payload;
-                    _Z_ERROR("Received Err for query %d: code=%d, message=%.*s\n", response._request_id, error.code,
+                    _Z_ERROR("Received Err for query %d: code=%d, message=%.*s\n", response._request_id, error._code,
                              payload.len, payload.start);
                 } break;
                 case _Z_RESPONSE_BODY_ACK: {