diff --git a/cmd/agent/monitor/monitor.go b/cmd/agent/monitor/monitor.go
index 40c76f7773..b330f4ad1c 100644
--- a/cmd/agent/monitor/monitor.go
+++ b/cmd/agent/monitor/monitor.go
@@ -64,7 +64,7 @@ func GetHost() *model.Host {
 		swapMemTotal = mv.SwapTotal
 	}
 
-	cachedBootTime = time.Now().Add(time.Duration(-1 * int64(hi.BootTime*1000)))
+	cachedBootTime = time.Unix(int64(hi.BootTime), 0)
 
 	return &model.Host{
 		Platform:        hi.OS,