diff --git a/charts/mailproxy/v0.1.0/templates/nginx-certificate.yaml b/charts/mailproxy/v0.1.0/templates/nginx-certificate.yaml
index 48d1ed1..1d89def 100644
--- a/charts/mailproxy/v0.1.0/templates/nginx-certificate.yaml
+++ b/charts/mailproxy/v0.1.0/templates/nginx-certificate.yaml
@@ -8,5 +8,6 @@ spec:
   secretName: {{ include "mailproxy.fullname" . }}-tls
   issuerRef:
     name: {{ .Values.nginx.certificate.issuer }}
+    kind: {{ .Values.nginx.certificate.issuerKind }}
   dnsNames:
     {{- toYaml .Values.nginx.certificate.dnsNames | nindent 4 }}
\ No newline at end of file
diff --git a/charts/mailproxy/v0.1.0/values.yaml b/charts/mailproxy/v0.1.0/values.yaml
index 060c374..43aa8f5 100644
--- a/charts/mailproxy/v0.1.0/values.yaml
+++ b/charts/mailproxy/v0.1.0/values.yaml
@@ -21,6 +21,7 @@ nginx:
         protocol: TCP
   certificate:
     issuer: letsencrypt-staging
+    issuerKind: ClusterIssuer
     dnsNames:
       - mail.com 
   resources: {}