diff --git a/sched/sched/sched_timerexpiration.c b/sched/sched/sched_timerexpiration.c
index 8677271d6e3..409a9a566af 100644
--- a/sched/sched/sched_timerexpiration.c
+++ b/sched/sched/sched_timerexpiration.c
@@ -439,7 +439,7 @@ static void nxsched_timer_start(unsigned int ticks)
 
       if (ret < 0)
         {
-          serr("ERROR: up_timer_start/up_alarm_start failed: %d\n");
+          serr("ERROR: up_timer_start/up_alarm_start failed: %d\n", ret);
           UNUSED(ret);
         }
     }