diff --git a/charts/ingress-nginx/templates/admission-webhooks/validating-webhook.yaml b/charts/ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
index a35faba66..4cd36a62e 100644
--- a/charts/ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
+++ b/charts/ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
@@ -6,8 +6,8 @@ kind: ValidatingWebhookConfiguration
 metadata:
   annotations:
   {{- if .Values.controller.admissionWebhooks.certManager.enabled }}
-    certmanager.k8s.io/inject-ca-from: {{ printf "%s/%s" .Release.Namespace (include "ingress-nginx.admissionWebhooks.fullname" .) | quote }}
-    cert-manager.io/inject-ca-from: {{ printf "%s/%s" .Release.Namespace (include "ingress-nginx.admissionWebhooks.fullname" .) | quote }}
+    certmanager.k8s.io/inject-ca-from: {{ printf "%s/%s" (include "ingress-nginx.namespace" .) (include "ingress-nginx.admissionWebhooks.fullname" .) | quote }}
+    cert-manager.io/inject-ca-from: {{ printf "%s/%s" (include "ingress-nginx.namespace" .) (include "ingress-nginx.admissionWebhooks.fullname" .) | quote }}
   {{- end }}
   {{- if .Values.controller.admissionWebhooks.annotations }}
     {{- toYaml .Values.controller.admissionWebhooks.annotations | nindent 4 }}