diff --git a/app-of-apps/headscale.yaml b/app-of-apps/headscale.yaml
index f0e5c7f..96656eb 100644
--- a/app-of-apps/headscale.yaml
+++ b/app-of-apps/headscale.yaml
@@ -35,6 +35,6 @@ spec:
         - name: ingress.hosts[0].host
           value: headscale.martyn.berlin
         - name: ingress.annotations
-          value: '{nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"}'
+          value: '{"nginx.ingress.kubernetes.io/backend-protocol": "HTTPS"}'
         - name: headscale.certmanager.dnsNames[0]
           value: headscale.martyn.berlin