diff --git a/pkg/cluster/cluster.go b/pkg/cluster/cluster.go
index 00c75f801..d374a7732 100644
--- a/pkg/cluster/cluster.go
+++ b/pkg/cluster/cluster.go
@@ -248,7 +248,7 @@ func (c *Cluster) Create() error {
 		}
 		if role == Master {
 			// replica endpoint will be created by the replica service. Master endpoint needs to be created by us,
-			// since the corresponding master service doesn't define any selectors.
+			// since the corresponding master service does not define any selectors.
 			ep, err = c.createEndpoint(role)
 			if err != nil {
 				return fmt.Errorf("could not create %s endpoint: %v", role, err)
@@ -412,7 +412,7 @@ func (c *Cluster) compareStatefulSetWith(statefulSet *appsv1.StatefulSet) *compa
 		match = false
 		needsReplace = true
 		needsRollUpdate = true
-		reasons = append(reasons, "new statefulset's pod template metadata annotations doesn't match the current one")
+		reasons = append(reasons, "new statefulset's pod template metadata annotations does not match the current one")
 	}
 	if !reflect.DeepEqual(c.Statefulset.Spec.Template.Spec.SecurityContext, statefulSet.Spec.Template.Spec.SecurityContext) {
 		match = false
@@ -488,20 +488,22 @@ func (c *Cluster) compareContainers(description string, setA, setB []v1.Containe
 	}
 
 	checks := []containerCheck{
-		newCheck("new statefulset %s's %s (index %d) name doesn't match the current one",
+		newCheck("new statefulset %s's %s (index %d) name does not match the current one",
 			func(a, b v1.Container) bool { return a.Name != b.Name }),
-		newCheck("new statefulset %s's %s (index %d) ports don't match the current one",
+		newCheck("new statefulset %s's %s (index %d) ports do not match the current one",
 			func(a, b v1.Container) bool { return !reflect.DeepEqual(a.Ports, b.Ports) }),
-		newCheck("new statefulset %s's %s (index %d) resources don't match the current ones",
+		newCheck("new statefulset %s's %s (index %d) resources do not match the current ones",
 			func(a, b v1.Container) bool { return !compareResources(&a.Resources, &b.Resources) }),
-		newCheck("new statefulset %s's %s (index %d) environment doesn't match the current one",
+		newCheck("new statefulset %s's %s (index %d) environment does not match the current one",
 			func(a, b v1.Container) bool { return !reflect.DeepEqual(a.Env, b.Env) }),
-		newCheck("new statefulset %s's %s (index %d) environment sources don't match the current one",
+		newCheck("new statefulset %s's %s (index %d) environment sources do not match the current one",
 			func(a, b v1.Container) bool { return !reflect.DeepEqual(a.EnvFrom, b.EnvFrom) }),
+		newCheck("new statefulset %s's %s (index %d) security context does not match the current one",
+			func(a, b v1.Container) bool { return !reflect.DeepEqual(a.SecurityContext, b.SecurityContext) }),
 	}
 
 	if !c.OpConfig.EnableLazySpiloUpgrade {
-		checks = append(checks, newCheck("new statefulset %s's %s (index %d) image doesn't match the current one",
+		checks = append(checks, newCheck("new statefulset %s's %s (index %d) image does not match the current one",
 			func(a, b v1.Container) bool { return a.Image != b.Image }))
 	}
 
diff --git a/pkg/cluster/sync.go b/pkg/cluster/sync.go
index 2781144b2..dc54ae8ee 100644
--- a/pkg/cluster/sync.go
+++ b/pkg/cluster/sync.go
@@ -599,7 +599,7 @@ func (c *Cluster) syncVolumeClaims() error {
 		return fmt.Errorf("could not compare size of the volume claims: %v", err)
 	}
 	if !act {
-		c.logger.Infof("volume claims don't require changes")
+		c.logger.Infof("volume claims do not require changes")
 		return nil
 	}
 	if err := c.resizeVolumeClaims(c.Spec.Volume); err != nil {
diff --git a/pkg/util/k8sutil/k8sutil.go b/pkg/util/k8sutil/k8sutil.go
index a23c1f842..dd6ec1e8b 100644
--- a/pkg/util/k8sutil/k8sutil.go
+++ b/pkg/util/k8sutil/k8sutil.go
@@ -201,7 +201,7 @@ func (client *KubernetesClient) SetPostgresCRDStatus(clusterName spec.Namespaced
 func SameService(cur, new *v1.Service) (match bool, reason string) {
 	//TODO: improve comparison
 	if cur.Spec.Type != new.Spec.Type {
-		return false, fmt.Sprintf("new service's type %q doesn't match the current one %q",
+		return false, fmt.Sprintf("new service's type %q does not match the current one %q",
 			new.Spec.Type, cur.Spec.Type)
 	}
 
@@ -211,13 +211,13 @@ func SameService(cur, new *v1.Service) (match bool, reason string) {
 	/* work around Kubernetes 1.6 serializing [] as nil. See https://github.com/kubernetes/kubernetes/issues/43203 */
 	if (len(oldSourceRanges) != 0) || (len(newSourceRanges) != 0) {
 		if !reflect.DeepEqual(oldSourceRanges, newSourceRanges) {
-			return false, "new service's LoadBalancerSourceRange doesn't match the current one"
+			return false, "new service's LoadBalancerSourceRange does not match the current one"
 		}
 	}
 
 	match = true
 
-	reasonPrefix := "new service's annotations doesn't match the current one:"
+	reasonPrefix := "new service's annotations does not match the current one:"
 	for ann := range cur.Annotations {
 		if _, ok := new.Annotations[ann]; !ok {
 			match = false
@@ -253,7 +253,7 @@ func SamePDB(cur, new *policybeta1.PodDisruptionBudget) (match bool, reason stri
 	//TODO: improve comparison
 	match = reflect.DeepEqual(new.Spec, cur.Spec)
 	if !match {
-		reason = "new PDB spec doesn't match the current one"
+		reason = "new PDB spec does not match the current one"
 	}
 
 	return
@@ -267,14 +267,14 @@ func getJobImage(cronJob *batchv1beta1.CronJob) string {
 func SameLogicalBackupJob(cur, new *batchv1beta1.CronJob) (match bool, reason string) {
 
 	if cur.Spec.Schedule != new.Spec.Schedule {
-		return false, fmt.Sprintf("new job's schedule %q doesn't match the current one %q",
+		return false, fmt.Sprintf("new job's schedule %q does not match the current one %q",
 			new.Spec.Schedule, cur.Spec.Schedule)
 	}
 
 	newImage := getJobImage(new)
 	curImage := getJobImage(cur)
 	if newImage != curImage {
-		return false, fmt.Sprintf("new job's image %q doesn't match the current one %q",
+		return false, fmt.Sprintf("new job's image %q does not match the current one %q",
 			newImage, curImage)
 	}