diff --git a/src/transport/unicast/rx.c b/src/transport/unicast/rx.c
index 1139ab67f..e3aaba59f 100644
--- a/src/transport/unicast/rx.c
+++ b/src/transport/unicast/rx.c
@@ -143,7 +143,7 @@ z_result_t _z_unicast_handle_transport_message(_z_transport_unicast_t *ztu, _z_t
 #if Z_FEATURE_FRAGMENTATION == 1
             _z_wbuf_t *dbuf;
             // Check if the SN is correct and select the right defragmentation buffer
-            if (_Z_HAS_FLAG(t_msg->_header, _Z_FLAG_T_FRAME_R) == true) {
+            if (_Z_HAS_FLAG(t_msg->_header, _Z_FLAG_T_FRAME_R)) {
                 // @TODO: amend once reliability is in place. For the time being only
                 //        monotonic SNs are ensured
                 if (_z_sn_precedes(ztu->_sn_res, ztu->_sn_rx_reliable, t_msg->_body._frame._sn)) {