diff --git a/core/prometheus/schedulers/TargetSubscriberScheduler.cpp b/core/prometheus/schedulers/TargetSubscriberScheduler.cpp
index 8a77c200fd..c8bc2d501e 100644
--- a/core/prometheus/schedulers/TargetSubscriberScheduler.cpp
+++ b/core/prometheus/schedulers/TargetSubscriberScheduler.cpp
@@ -217,7 +217,7 @@ TargetSubscriberScheduler::BuildScrapeSchedulerSet(std::vector<Labels>& targetGr
         scrapeScheduler->SetTimer(mTimer);
 
         auto randSleepMilliSec = GetRandSleepMilliSec(
-            scrapeScheduler->GetId(), prometheus::RefeshIntervalSeconds, GetCurrentTimeInMilliSeconds());
+            scrapeScheduler->GetId(), mScrapeConfigPtr->mScrapeIntervalSeconds, GetCurrentTimeInMilliSeconds());
         auto firstExecTime = std::chrono::steady_clock::now() + std::chrono::milliseconds(randSleepMilliSec);
         scrapeScheduler->SetFirstExecTime(firstExecTime);