diff --git a/src/pkg/zitadel/zitadel.go b/src/pkg/zitadel/zitadel.go
index c5f453e..017bbc7 100644
--- a/src/pkg/zitadel/zitadel.go
+++ b/src/pkg/zitadel/zitadel.go
@@ -51,7 +51,11 @@ func GetAuthority(zitadel *zitadelv1alpha1.ZitadelCluster) string {
 }
 
 func GetIssuer(zitadel *zitadelv1alpha1.ZitadelCluster) string {
-	return fmt.Sprintf("http://%s:%d", zitadel.Spec.Host, zitadel.Spec.ExternalPort)
+	scheme := "http"
+	if zitadel.Spec.ExternalSecure {
+		scheme = "https"
+	}
+	return fmt.Sprintf("%s://%s:%d", scheme, zitadel.Spec.Host, zitadel.Spec.ExternalPort)
 }
 
 func GetAPI(zitadel *zitadelv1alpha1.ZitadelCluster) string {