diff --git a/config/operator/olm.cue b/config/operator/olm.cue
index 928cb7c..9976316 100644
--- a/config/operator/olm.cue
+++ b/config/operator/olm.cue
@@ -174,14 +174,14 @@ _related_images: [
 	}
 ]
 
-// quay.io/coreos/etcd is not included in Cilium >= 1.15 Helm charts.
-// Ref: https://github.com/cilium/cilium/blob/v1.15.1/install/kubernetes/cilium/values.yaml
-if strings.HasPrefix(parameters.ciliumVersion, "1.12") || strings.HasPrefix(parameters.ciliumVersion, "1.13") || strings.HasPrefix(parameters.ciliumVersion, "1.14") {
-	_related_images: _related_images + [{
-		name: "clustermesh-etcd"
-		image: parameters.clustermeshEtcdImage
-	}]
-}
+_extra_related_images: [
+	if parameters.clustermeshEtcdImage != "nothing" {
+		{
+			name: "clustermesh-etcd"
+			image: parameters.clustermeshEtcdImage
+		},
+	},
+]
 
 #CSVWorkloadTemplate: {
 	apiVersion: "operators.coreos.com/v1alpha1"
@@ -195,7 +195,7 @@ if strings.HasPrefix(parameters.ciliumVersion, "1.12") || strings.HasPrefix(para
             if parameters.replaces != "nothing" {
 		replaces: parameters.replaces
              }
-		relatedImages: _related_images
+		relatedImages: _related_images + _extra_related_images
 		apiservicedefinitions: {}
 		customresourcedefinitions: owned: [{
 			name:    "ciliumconfigs.cilium.io"
diff --git a/config/operator/operator.cue b/config/operator/operator.cue
index dc1080b..b1b41eb 100644
--- a/config/operator/operator.cue
+++ b/config/operator/operator.cue
@@ -57,12 +57,17 @@ _related_images_env_vars: [{
 	{
 		name: "RELATED_IMAGE_NODEINIT"
 		value: parameters.nodeInitImage
-	},
-	{
-		name: "RELATED_IMAGE_CLUSTERMESH_ETCD"
-		value: parameters.clustermeshEtcdImage
 	}]
 
+_extra_related_images_env_vars: [
+	if parameters.clustermeshEtcdImage != "nothing" {
+		{
+			name: "RELATED_IMAGE_CLUSTERMESH_ETCD"
+			value: parameters.clustermeshEtcdImage
+		},
+	},
+]
+
 _workloadSpec: {
 	template: {
 		metadata: labels: _commonMetadata.labels
@@ -86,7 +91,7 @@ _workloadSpec: {
 				env: [{
 					name: "WATCH_NAMESPACE"
 					valueFrom: fieldRef: fieldPath: "metadata.namespace"
-				}] + _related_images_env_vars
+				}] + _related_images_env_vars + _extra_related_images_env_vars
 				volumeMounts: [{
 					name:      "tmp"
 					mountPath: "/tmp"
diff --git a/scripts/generate-configs.sh b/scripts/generate-configs.sh
index 0715ae0..22d63f4 100755
--- a/scripts/generate-configs.sh
+++ b/scripts/generate-configs.sh
@@ -57,7 +57,12 @@ hubble_ui_be_image="$(get_image "$(yq e '.hubble.ui.backend.image.repository' "$
 hubble_ui_fe_image="$(get_image "$(yq e '.hubble.ui.frontend.image.repository' "$values_file")" "$(yq e '.hubble.ui.frontend.image.tag' "$values_file")")"
 etcd_operator_image="$(get_image "$(yq e '.etcd.image.repository' "$values_file")" "$(yq e '.etcd.image.tag' "$values_file")")"
 nodeinit_image="$(get_image "$(yq e '.nodeinit.image.repository' "$values_file")" "$(yq e '.nodeinit.image.tag' "$values_file")")"
-clustermesh_etcd_image="$(get_image "$(yq e '.clustermesh.apiserver.etcd.image.repository' "$values_file")" "$(yq e '.clustermesh.apiserver.etcd.image.tag' "$values_file")")"
+# quay.io/coreos/etcd is not included in Cilium >= 1.15 Helm charts.
+# Ref: https://github.com/cilium/cilium/blob/v1.15.1/install/kubernetes/cilium/values.yaml
+cilium_minor_number=$(cut -d '.' -f 2 <<< "$cilium_version")
+if [[ $cilium_minor_number -lt 15 ]]; then
+  clustermesh_etcd_image="$(get_image "$(yq e '.clustermesh.apiserver.etcd.image.repository' "$values_file")" "$(yq e '.clustermesh.apiserver.etcd.image.tag' "$values_file")")"
+fi
 
 cilium_major_minor="$(echo "${cilium_version}" | cut -d . -f -2)"
 # to not make 1.13.0 as previous release cause failure
@@ -99,7 +104,7 @@ instances: [
       hubbleUIFrontendImage: "${hubble_ui_fe_image}"
       etcdOperatorImage: "${etcd_operator_image}"
       nodeInitImage: "${nodeinit_image}"
-      clustermeshEtcdImage: "${clustermesh_etcd_image}"
+      clustermeshEtcdImage: "${clustermesh_etcd_image:-nothing}"
     }
   },
   {
@@ -123,7 +128,7 @@ instances: [
       hubbleUIFrontendImage: "${hubble_ui_fe_image}"
       etcdOperatorImage: "${etcd_operator_image}"
       nodeInitImage: "${nodeinit_image}"
-      clustermeshEtcdImage: "${clustermesh_etcd_image}"
+      clustermeshEtcdImage: "${clustermesh_etcd_image:-nothing}"
     }
   },
 ]