diff --git a/pkg/cluster/cluster.go b/pkg/cluster/cluster.go
index c6f5ed9e0..b0152309d 100644
--- a/pkg/cluster/cluster.go
+++ b/pkg/cluster/cluster.go
@@ -248,7 +248,7 @@ func (c *Cluster) Create(stopCh <-chan struct{}) error {
 	return nil
 }
 
-func (c Cluster) sameServiceWith(service *v1.Service) (match bool, reason string) {
+func (c *Cluster) sameServiceWith(service *v1.Service) (match bool, reason string) {
 	//TODO: improve comparison
 	if !reflect.DeepEqual(c.Service.Spec.LoadBalancerSourceRanges, service.Spec.LoadBalancerSourceRanges) {
 		reason = "new service's LoadBalancerSourceRange doesn't match the current one"
@@ -258,7 +258,7 @@ func (c Cluster) sameServiceWith(service *v1.Service) (match bool, reason string
 	return
 }
 
-func (c Cluster) sameVolumeWith(volume spec.Volume) (match bool, reason string) {
+func (c *Cluster) sameVolumeWith(volume spec.Volume) (match bool, reason string) {
 	if !reflect.DeepEqual(c.Spec.Volume, volume) {
 		reason = "new volume's specification doesn't match the current one"
 	} else {
@@ -267,7 +267,7 @@ func (c Cluster) sameVolumeWith(volume spec.Volume) (match bool, reason string)
 	return
 }
 
-func (c Cluster) compareStatefulSetWith(statefulSet *v1beta1.StatefulSet) (match, needsRollUpdate bool, reason string) {
+func (c *Cluster) compareStatefulSetWith(statefulSet *v1beta1.StatefulSet) (match, needsRollUpdate bool, reason string) {
 	match = true
 	//TODO: improve me
 	if *c.Statefulset.Spec.Replicas != *statefulSet.Spec.Replicas {