diff --git a/deploy/helm/templates/deployment.yaml b/deploy/helm/templates/deployment.yaml
index 1227bbbe331..76776e32aa8 100644
--- a/deploy/helm/templates/deployment.yaml
+++ b/deploy/helm/templates/deployment.yaml
@@ -93,9 +93,6 @@ spec:
             {{- if .Values.userAgent }}
             - "--user-agent={{ .Values.userAgent }}"
             {{- end }}
-            {{- if .Values.dualOperatorsMode }}
-            - "--dual-operators-mode={{ .Values.dualOperatorsMode }}"
-            {{- end }}
           env:
             - name: CM_NAMESPACE
               value: {{ .Release.Namespace }}
@@ -103,6 +100,10 @@ spec:
             - name: CM_AFFINITY
               value: {{ toJson . | quote }}
             {{- end }}
+            {{- if .Values.dualOperatorsMode }}
+            - name: DUAL_OPERATORS_MODE
+              value: {{ .Values.dualOperatorsMode }}
+            {{- end }}
             {{- if .Values.reconcileWorkers }}
             - name: KUBEBLOCKS_RECONCILE_WORKERS
               value: {{ .Values.reconcileWorkers | quote }}
diff --git a/pkg/constant/const.go b/pkg/constant/const.go
index 69691adbcd8..0835171fa13 100644
--- a/pkg/constant/const.go
+++ b/pkg/constant/const.go
@@ -329,5 +329,5 @@ const EmptyInsTemplateName = ""
 // DualOperatorsMode indicates whether the operator runs in dual-operators mode.
 // If it's true, the operator will degrade to a secondary operator and only manage the resources dedicated to releases prior to v1.0.
 const (
-	DualOperatorsMode = "dual-operators-mode"
+	DualOperatorsMode = "DUAL_OPERATORS_MODE"
 )