diff --git a/sched/sched/sched_critmonitor.c b/sched/sched/sched_critmonitor.c
index 2e5ad7af3be..1de9146250a 100644
--- a/sched/sched/sched_critmonitor.c
+++ b/sched/sched/sched_critmonitor.c
@@ -420,7 +420,7 @@ void nxsched_switch_critmon(FAR struct tcb_s *from, FAR struct tcb_s *to)
 
   if (to->lockcount > 0)
     {
-      to->premp_start = current;
+      to->preemp_start = current;
     }
 #endif /* CONFIG_SCHED_CRITMONITOR_MAXTIME_PREEMPTION */