diff --git a/scheduler/schedule.cpp b/scheduler/schedule.cpp
index 92503f2..7460b5b 100644
--- a/scheduler/schedule.cpp
+++ b/scheduler/schedule.cpp
@@ -151,7 +151,7 @@ int SensorScheduler::GetNextDuration(int short_addr) {
     long current_ts = GetLocalTs(); 
     long next_ts = CalcNextTimestamp(id);
     int duration = next_ts - current_ts;
-    zlog_debug(zct, "[%d] next duration is %d", id, duration);
+    zlog_warn(zct, "[%d] next duration is %d", id, duration);
     return duration; 
 }