diff --git a/lib/reply.js b/lib/reply.js
index 935e80ee76..29a2be4a3c 100644
--- a/lib/reply.js
+++ b/lib/reply.js
@@ -377,8 +377,8 @@ function preserializeHookEnd (err, request, reply, payload) {
 }
 
 function onSendHook (reply, payload) {
-  reply[kReplySent] = true
   if (reply.context.onSend !== null) {
+    reply[kReplySent] = true
     onSendHookRunner(
       reply.context.onSend,
       reply.request,