diff --git a/routers/api/v1/repo/cloudbrain_dashboard.go b/routers/api/v1/repo/cloudbrain_dashboard.go
index ab5be5b82..ad8890622 100755
--- a/routers/api/v1/repo/cloudbrain_dashboard.go
+++ b/routers/api/v1/repo/cloudbrain_dashboard.go
@@ -1754,7 +1754,7 @@ func getDurationStatistic(beginTime time.Time, endTime time.Time) (models.Durati
 	} else {
 		totalUsageRate = totalUse / totalCanUse
 	}
-	delete(OpenIUsageDuration, "/")
+	delete(C2NetUsageDuration, "/")
 
 	OpenIDurationRate.AiCenterTotalDurationStat = OpenITotalDuration
 	OpenIDurationRate.AiCenterUsageDurationStat = OpenIUsageDuration