diff --git a/core/net/mac/tsch/tsch-log.c b/core/net/mac/tsch/tsch-log.c
index bfb033e9d..982924419 100644
--- a/core/net/mac/tsch/tsch-log.c
+++ b/core/net/mac/tsch/tsch-log.c
@@ -103,7 +103,7 @@ tsch_log_process_pending(void)
         break;
       case tsch_log_rx:
         printf("%s-%u-%u %u rx %d",
-            log->rx.is_unicast == 0 ? "bc" : "uc", log->rx.is_data, log->tx.sec_level,
+            log->rx.is_unicast == 0 ? "bc" : "uc", log->rx.is_data, log->rx.sec_level,
                 log->rx.datalen,
                 log->rx.src);
         if(log->rx.drift_used) {