diff --git a/pkg/kubelet/kubelet_server.go b/pkg/kubelet/kubelet_server.go
index cc8f9c69c05..e4fb2446972 100644
--- a/pkg/kubelet/kubelet_server.go
+++ b/pkg/kubelet/kubelet_server.go
@@ -29,7 +29,7 @@ import (
 
 type KubeletServer struct {
 	Kubelet       kubeletInterface
-	UpdateChannel chan manifestUpdate
+	UpdateChannel chan<- manifestUpdate
 }
 
 // kubeletInterface contains all the kubelet methods required by the server.