diff --git a/controllers/gce/controller/fakes.go b/controllers/gce/controller/fakes.go
index 4e98c7792..cfa3ed08f 100644
--- a/controllers/gce/controller/fakes.go
+++ b/controllers/gce/controller/fakes.go
@@ -51,10 +51,10 @@ func NewFakeClusterManager(clusterName string) *fakeClusterManager {
 	namer := utils.NewNamer(clusterName)
 
 	nodePool := instances.NewNodePool(fakeIGs)
-	nodePool.Init(&instances.FakeZoneLister{[]string{"zone-a"}})
+	nodePool.Init(&instances.FakeZoneLister{Zones: []string{"zone-a"}})
 
 	healthChecker := healthchecks.NewHealthChecker(fakeHCs, "/", namer)
-	healthChecker.Init(&healthchecks.FakeHealthCheckGetter{nil})
+	healthChecker.Init(&healthchecks.FakeHealthCheckGetter{})
 
 	backendPool := backends.NewBackendPool(
 		fakeBackends,
diff --git a/controllers/gce/loadbalancers/loadbalancers_test.go b/controllers/gce/loadbalancers/loadbalancers_test.go
index 3d3732f24..8ccb7f347 100644
--- a/controllers/gce/loadbalancers/loadbalancers_test.go
+++ b/controllers/gce/loadbalancers/loadbalancers_test.go
@@ -39,9 +39,9 @@ func newFakeLoadBalancerPool(f LoadBalancers, t *testing.T) LoadBalancerPool {
 	fakeHCs := healthchecks.NewFakeHealthChecks()
 	namer := &utils.Namer{}
 	healthChecker := healthchecks.NewHealthChecker(fakeHCs, "/", namer)
-	healthChecker.Init(&healthchecks.FakeHealthCheckGetter{nil})
+	healthChecker.Init(&healthchecks.FakeHealthCheckGetter{})
 	nodePool := instances.NewNodePool(fakeIGs)
-	nodePool.Init(&instances.FakeZoneLister{[]string{defaultZone}})
+	nodePool.Init(&instances.FakeZoneLister{Zones: []string{defaultZone}})
 	backendPool := backends.NewBackendPool(
 		fakeBackends, healthChecker, nodePool, namer, []int64{}, false)
 	return NewLoadBalancerPool(f, backendPool, testDefaultBeNodePort, namer)