diff -r 43229acd75ea -r e77a97d0edbb src/hotspot/share/jfr/recorder/service/jfrRecorderThread.cpp
--- a/src/hotspot/share/jfr/recorder/service/jfrRecorderThread.cpp	Thu Oct 10 17:36:57 2019 +0200
+++ b/src/hotspot/share/jfr/recorder/service/jfrRecorderThread.cpp	Fri Oct 11 19:46:05 2019 +0200
@@ -98,7 +98,7 @@
   instanceHandle h_thread_oop(THREAD, (instanceOop)result.get_jobject());
   assert(h_thread_oop.not_null(), "invariant");
   // attempt thread start
-  const Thread* const t = start_thread(h_thread_oop, recorderthread_entry,THREAD);
+  Thread* const t = start_thread(h_thread_oop, recorderthread_entry,THREAD);
   if (!HAS_PENDING_EXCEPTION) {
     Jfr::exclude_thread(t);
     cp_manager->register_service_thread(t);