diff --git a/helm/ntfy/templates/certificate.yaml b/helm/ntfy/templates/certificate.yaml
index 96825a8..47e2f66 100644
--- a/helm/ntfy/templates/certificate.yaml
+++ b/helm/ntfy/templates/certificate.yaml
@@ -37,7 +37,7 @@ kind: Certificate
 metadata:
   # Name the Certificate resource (often same as secretName)
   name: {{ $secretName }}
-  namespace: {{ $namespace }}
+  namespace: istio-system
   labels:
     {{- include "ntfy.labels" $ | nindent 4 }}
     {{- with $.Values.certManager.certificate.extraLabels }}