diff --git a/pkg/apis/acid.zalan.do/v1/util_test.go b/pkg/apis/acid.zalan.do/v1/util_test.go
index 3c087101b60db056f2af0a21df104e691c55b0ef..3843908d08cdee1a329a6075fda4b17063ef2b6e 100644
--- a/pkg/apis/acid.zalan.do/v1/util_test.go
+++ b/pkg/apis/acid.zalan.do/v1/util_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/zalando/postgres-operator/pkg/util"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
@@ -215,6 +216,7 @@ var unmarshalCluster = []struct {
 	    "clone" : {
 	     "cluster": "acid-batman"
 	     },
+		"enableShmVolume": false,
 	    "patroni": {
 	      "initdb": {
 	        "encoding": "UTF8",
@@ -266,6 +268,7 @@ var unmarshalCluster = []struct {
 					StorageClass: "SSD",
 					SubPath:      "subdir",
 				},
+				ShmVolume: util.False(),
 				Patroni: Patroni{
 					InitDB: map[string]string{
 						"encoding":       "UTF8",
@@ -313,7 +316,7 @@ var unmarshalCluster = []struct {
 			},
 			Error: "",
 		},
-		marshal: []byte(`{"kind":"Postgresql","apiVersion":"acid.zalan.do/v1","metadata":{"name":"acid-testcluster1","creationTimestamp":null},"spec":{"postgresql":{"version":"9.6","parameters":{"log_statement":"all","max_connections":"10","shared_buffers":"32MB"}},"volume":{"size":"5Gi","storageClass":"SSD", "subPath": "subdir"},"patroni":{"initdb":{"data-checksums":"true","encoding":"UTF8","locale":"en_US.UTF-8"},"pg_hba":["hostssl all all 0.0.0.0/0 md5","host    all all 0.0.0.0/0 md5"],"ttl":30,"loop_wait":10,"retry_timeout":10,"maximum_lag_on_failover":33554432,"slots":{"permanent_logical_1":{"database":"foo","plugin":"pgoutput","type":"logical"}}},"resources":{"requests":{"cpu":"10m","memory":"50Mi"},"limits":{"cpu":"300m","memory":"3000Mi"}},"teamId":"ACID","allowedSourceRanges":["127.0.0.1/32"],"numberOfInstances":2,"users":{"zalando":["superuser","createdb"]},"maintenanceWindows":["Mon:01:00-06:00","Sat:00:00-04:00","05:00-05:15"],"clone":{"cluster":"acid-batman"}},"status":{"PostgresClusterStatus":""}}`),
+		marshal: []byte(`{"kind":"Postgresql","apiVersion":"acid.zalan.do/v1","metadata":{"name":"acid-testcluster1","creationTimestamp":null},"spec":{"postgresql":{"version":"9.6","parameters":{"log_statement":"all","max_connections":"10","shared_buffers":"32MB"}},"volume":{"size":"5Gi","storageClass":"SSD", "subPath": "subdir"},"enableShmVolume":false,"patroni":{"initdb":{"data-checksums":"true","encoding":"UTF8","locale":"en_US.UTF-8"},"pg_hba":["hostssl all all 0.0.0.0/0 md5","host    all all 0.0.0.0/0 md5"],"ttl":30,"loop_wait":10,"retry_timeout":10,"maximum_lag_on_failover":33554432,"slots":{"permanent_logical_1":{"database":"foo","plugin":"pgoutput","type":"logical"}}},"resources":{"requests":{"cpu":"10m","memory":"50Mi"},"limits":{"cpu":"300m","memory":"3000Mi"}},"teamId":"ACID","allowedSourceRanges":["127.0.0.1/32"],"numberOfInstances":2,"users":{"zalando":["superuser","createdb"]},"maintenanceWindows":["Mon:01:00-06:00","Sat:00:00-04:00","05:00-05:15"],"clone":{"cluster":"acid-batman"}},"status":{"PostgresClusterStatus":""}}`),
 		err:     nil},
 	// example with teamId set in input
 	{