diff --git a/ui/src/views/compute/CreateKubernetesCluster.vue b/ui/src/views/compute/CreateKubernetesCluster.vue
index 8cc666d8789..3c16323836a 100644
--- a/ui/src/views/compute/CreateKubernetesCluster.vue
+++ b/ui/src/views/compute/CreateKubernetesCluster.vue
@@ -341,7 +341,9 @@ export default {
       params.showicon = true
       api('listZones', params).then(json => {
         const listZones = json.listzonesresponse.zone
-        this.zones = this.zones.concat(listZones)
+        if (listZones) {
+          this.zones = this.zones.concat(listZones)
+        }
       }).finally(() => {
         this.zoneLoading = false
         if (this.arrayHasItems(this.zones)) {
diff --git a/ui/src/views/image/AddKubernetesSupportedVersion.vue b/ui/src/views/image/AddKubernetesSupportedVersion.vue
index c1a276af8b5..8aab83bf129 100644
--- a/ui/src/views/image/AddKubernetesSupportedVersion.vue
+++ b/ui/src/views/image/AddKubernetesSupportedVersion.vue
@@ -194,7 +194,9 @@ export default {
       this.zoneLoading = true
       api('listZones', params).then(json => {
         const listZones = json.listzonesresponse.zone
-        this.zones = this.zones.concat(listZones)
+        if (listZones) {
+          this.zones = this.zones.concat(listZones)
+        }
       }).finally(() => {
         this.zoneLoading = false
         if (this.arrayHasItems(this.zones)) {
diff --git a/ui/src/views/image/RegisterOrUploadIso.vue b/ui/src/views/image/RegisterOrUploadIso.vue
index 155e61ee2a4..c4f728adfb5 100644
--- a/ui/src/views/image/RegisterOrUploadIso.vue
+++ b/ui/src/views/image/RegisterOrUploadIso.vue
@@ -232,7 +232,9 @@ export default {
       }
       api('listZones', params).then(json => {
         const listZones = json.listzonesresponse.zone
-        this.zones = this.zones.concat(listZones)
+        if (listZones) {
+          this.zones = this.zones.concat(listZones)
+        }
       }).finally(() => {
         this.zoneLoading = false
         this.form.zoneid = (this.zones[0].id ? this.zones[0].id : '')
diff --git a/ui/src/views/offering/AddComputeOffering.vue b/ui/src/views/offering/AddComputeOffering.vue
index 107d2f0ea8d..3fa25e869a9 100644
--- a/ui/src/views/offering/AddComputeOffering.vue
+++ b/ui/src/views/offering/AddComputeOffering.vue
@@ -807,7 +807,9 @@ export default {
       this.zoneLoading = true
       api('listZones', params).then(json => {
         const listZones = json.listzonesresponse.zone
-        this.zones = this.zones.concat(listZones)
+        if (listZones) {
+          this.zones = this.zones.concat(listZones)
+        }
       }).finally(() => {
         this.zoneLoading = false
       })
diff --git a/ui/src/views/offering/AddDiskOffering.vue b/ui/src/views/offering/AddDiskOffering.vue
index d2914a869cd..1c9f5bc8c74 100644
--- a/ui/src/views/offering/AddDiskOffering.vue
+++ b/ui/src/views/offering/AddDiskOffering.vue
@@ -409,7 +409,9 @@ export default {
       this.zoneLoading = true
       api('listZones', params).then(json => {
         const listZones = json.listzonesresponse.zone
-        this.zones = this.zones.concat(listZones)
+        if (listZones) {
+          this.zones = this.zones.concat(listZones)
+        }
       }).finally(() => {
         this.zoneLoading = false
       })