diff --git a/index.js b/index.js
index 274fcb5..805a4be 100644
--- a/index.js
+++ b/index.js
@@ -72,7 +72,7 @@ function jaegerPlugin (fastify, opts, next) {
 
   function onResponse (req, reply, done) {
     const span = tracerMap.get(req)
-    span.setTag(Tags.HTTP_STATUS_CODE, reply.raw.statusCode)
+    span.setTag(Tags.HTTP_STATUS_CODE, reply.res.statusCode)
     span.finish()
     done()
   }