diff --git a/contrib/mesos/pkg/executor/service/service.go b/contrib/mesos/pkg/executor/service/service.go
index dd3b6605b9e..a3b41659eef 100644
--- a/contrib/mesos/pkg/executor/service/service.go
+++ b/contrib/mesos/pkg/executor/service/service.go
@@ -387,8 +387,10 @@ func (ks *KubeletExecutorServer) createAndInitKubelet(
 		StaticPodsConfigPath: staticPodsConfigPath,
 	})
 
-	fileSourceUpdates := pc.Channel(kubelet.FileSource)
 	go exec.InitializeStaticPodsSource(func() {
+		// Create file source only when we are called back. Otherwise, it is never marked unseen.
+		fileSourceUpdates := pc.Channel(kubelet.FileSource)
+
 		kconfig.NewSourceFile(staticPodsConfigPath, kc.Hostname, kc.FileCheckFrequency, fileSourceUpdates)
 	})