diff --git a/kubernetes/loculus/templates/ingressroute.yaml b/kubernetes/loculus/templates/ingressroute.yaml
index 5096364154..1b8ab3f9e8 100644
--- a/kubernetes/loculus/templates/ingressroute.yaml
+++ b/kubernetes/loculus/templates/ingressroute.yaml
@@ -14,7 +14,7 @@ kind: Ingress
 metadata:
   name: loculus-website-ingress
   annotations:
-    traefik.ingress.kubernetes.io/router.middlewares: compression-middleware@kubernetescrd
+    traefik.ingress.kubernetes.io/router.middlewares: "compression-middleware@kubernetescrd"
 spec:
   rules:
     - host: "{{ .Values.host }}"