diff --git a/docs/serving/services/http-protocol.md b/docs/serving/services/http-protocol.md
index 8a0eba2577c..7dfddf9132f 100644
--- a/docs/serving/services/http-protocol.md
+++ b/docs/serving/services/http-protocol.md
@@ -77,7 +77,7 @@ metadata:
   namespace: default
 spec:
   template:
-    spec:
+    metadata:
       annotations:
         features.knative.dev/http-full-duplex: "Enabled"
 ...