diff --git a/docs/operator-manual/ingress.md b/docs/operator-manual/ingress.md
index 84b2bcaf34a67..06661c920edfe 100644
--- a/docs/operator-manual/ingress.md
+++ b/docs/operator-manual/ingress.md
@@ -339,7 +339,7 @@ spec:
         - name: argocd-server
           port: 80
     - kind: Rule
-      match: Host(`argocd.example.com`) && Headers(`Content-Type`, `application/grpc`)
+      match: Host(`argocd.example.com`) && Header(`Content-Type`, `application/grpc`)
       priority: 11
       services:
         - name: argocd-server