diff --git a/charts/argo-workflows/templates/controller/workflow-rb.yaml b/charts/argo-workflows/templates/controller/workflow-rb.yaml
index 4bb6e5cc..c13f31f8 100644
--- a/charts/argo-workflows/templates/controller/workflow-rb.yaml
+++ b/charts/argo-workflows/templates/controller/workflow-rb.yaml
@@ -1,5 +1,5 @@
 {{- if .Values.workflow.rbac.create -}}
-  {{- range $namespace := .Values.singeNamespace | ternary (list "") (concat .Values.workflow.namespace .Values.controller.workflowNamespaces | compact | uniq) }}
+  {{- range $namespace := .Values.singeNamespace | ternary (list "") (append .Values.controller.workflowNamespaces .Values.workflow.namespace | compact | uniq) }}
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: RoleBinding
diff --git a/charts/argo-workflows/templates/controller/workflow-role.yaml b/charts/argo-workflows/templates/controller/workflow-role.yaml
index a5562335..39d759b3 100644
--- a/charts/argo-workflows/templates/controller/workflow-role.yaml
+++ b/charts/argo-workflows/templates/controller/workflow-role.yaml
@@ -1,5 +1,5 @@
 {{- if .Values.workflow.rbac.create -}}
-  {{- range $namespace := .Values.singeNamespace | ternary (list "") (concat .Values.workflow.namespace .Values.controller.workflowNamespaces | compact | uniq) }}
+  {{- range $namespace := .Values.singeNamespace | ternary (list "") (append .Values.controller.workflowNamespaces .Values.workflow.namespace | compact | uniq) }}
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: Role
diff --git a/charts/argo-workflows/templates/controller/workflow-sa.yaml b/charts/argo-workflows/templates/controller/workflow-sa.yaml
index f9971916..3d4e7bdd 100644
--- a/charts/argo-workflows/templates/controller/workflow-sa.yaml
+++ b/charts/argo-workflows/templates/controller/workflow-sa.yaml
@@ -1,5 +1,5 @@
 {{- if .Values.workflow.serviceAccount.create -}}
-  {{ range $namespace := .Values.singeNamespace | ternary (list "") (concat .Values.workflow.namespace .Values.controller.workflowNamespaces | compact | uniq) }}
+  {{- range $namespace := .Values.singeNamespace | ternary (list "") (append .Values.controller.workflowNamespaces .Values.workflow.namespace | compact | uniq) }}
 ---
 apiVersion: v1
 kind: ServiceAccount