diff --git a/helm/istiod/templates/gateway.yaml b/helm/istiod/templates/gateway.yaml
index 9f318c8..5ff9b8a 100644
--- a/helm/istiod/templates/gateway.yaml
+++ b/helm/istiod/templates/gateway.yaml
@@ -12,8 +12,8 @@ spec:
       name: http
       protocol: HTTP
     hosts:
-    - *.apps.linvogel.ch
-    - *.apps.linvogel.internal
+    - '*.apps.linvogel.ch'
+    - '*.apps.linvogel.internal'
     tls:
       httpsRedirect: true # sends 301 redirect for http requests
   - port:
@@ -21,8 +21,8 @@ spec:
       name: https-443
       protocol: HTTPS
     hosts:
-    - *.apps.linvogel.ch
-    - *.apps.linvogel.internal
+    - '*.apps.linvogel.ch'
+    - '*.apps.linvogel.internal'
     tls:
       mode: SIMPLE 
       serverCertificate: /etc/certs/servercert.pem