diff --git a/pkg/cloudevents/transport/http/transport.go b/pkg/cloudevents/transport/http/transport.go
index 28e3e80f3..bc7045329 100644
--- a/pkg/cloudevents/transport/http/transport.go
+++ b/pkg/cloudevents/transport/http/transport.go
@@ -575,6 +575,13 @@ func (t *Transport) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 		if len(resp.Message.Header) > 0 {
 			copyHeaders(resp.Message.Header, w.Header())
 		}
+
+		status := http.StatusAccepted
+		if resp.StatusCode >= 200 && resp.StatusCode < 600 {
+			status = resp.StatusCode
+		}
+		w.WriteHeader(status)
+
 		w.Header().Add("Content-Length", strconv.Itoa(len(resp.Message.Body)))
 		if len(resp.Message.Body) > 0 {
 			if _, err := w.Write(resp.Message.Body); err != nil {
@@ -582,11 +589,6 @@ func (t *Transport) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 				return
 			}
 		}
-		status := http.StatusAccepted
-		if resp.StatusCode >= 200 && resp.StatusCode < 600 {
-			status = resp.StatusCode
-		}
-		w.WriteHeader(status)
 
 		r.OK()
 		return