diff --git a/server/server.go b/server/server.go
index 96763f100..9a947e068 100644
--- a/server/server.go
+++ b/server/server.go
@@ -121,10 +121,7 @@ func New(cfg config.Config) (*Server, error) {
 	}
 
 	hrt := heart.New(reg, mach)
-	mon := &Monitor{
-		TTL:  agentTTL,
-		ival: agentTTL / 2,
-	}
+	mon := NewMonitor(agentTTL)
 
 	apiServer := api.NewServer(listeners, api.NewServeMux(reg, cfg.TokenLimit))
 	apiServer.Serve()