diff --git a/charts/core/templates/manager-ingress.yaml b/charts/core/templates/manager-ingress.yaml
index 27a8e1b0..34d1a0b3 100644
--- a/charts/core/templates/manager-ingress.yaml
+++ b/charts/core/templates/manager-ingress.yaml
@@ -5,8 +5,15 @@ kind: Ingress
 metadata:
   name: neuvector-webui-ingress
   namespace: {{ .Release.Namespace }}
-{{- with .Values.manager.ingress.annotations }}
   annotations:
+{{- if not (hasKey .Values.manager.ingress.annotations "nginx.ingress.kubernetes.io/backend-protocol") }}
+{{- if .Values.manager.env.ssl }}
+    nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
+{{- else }}
+    nginx.ingress.kubernetes.io/backend-protocol: "HTTP"
+{{- end }}
+{{- end }}
+{{- with .Values.manager.ingress.annotations }}
 {{ toYaml . | indent 4 }}
 {{- end }}
   labels:
@@ -41,8 +48,15 @@ kind: Ingress
 metadata:
   name: neuvector-webui-ingress
   namespace: {{ .Release.Namespace }}
-{{- with .Values.manager.ingress.annotations }}
   annotations:
+{{- if not (hasKey .Values.manager.ingress.annotations "nginx.ingress.kubernetes.io/backend-protocol") }}
+{{- if .Values.manager.env.ssl }}
+    nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
+{{- else }}
+    nginx.ingress.kubernetes.io/backend-protocol: "HTTP"
+{{- end }}
+{{- end }}
+{{- with .Values.manager.ingress.annotations }}
 {{ toYaml . | indent 4 }}
 {{- end }}
   labels:
diff --git a/charts/core/values.yaml b/charts/core/values.yaml
index c4ec154d..bfd60b0e 100644
--- a/charts/core/values.yaml
+++ b/charts/core/values.yaml
@@ -427,7 +427,8 @@ manager:
     ingressClassName: ""
     path: "/"
     annotations:
-      nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
+      {}
+      # nginx.ingress.kubernetes.io/backend-protocol: "HTTPS" # Automatically set based on manager.env.ssl
       # kubernetes.io/ingress.class: my-nginx
       # nginx.ingress.kubernetes.io/whitelist-source-range: "1.1.1.1"
       # nginx.ingress.kubernetes.io/rewrite-target: /