--- old/src/share/vm/runtime/objectMonitor.hpp	2020-01-16 16:56:33.755360598 +0300
+++ new/src/share/vm/runtime/objectMonitor.hpp	2020-01-16 16:56:33.707362147 +0300
@@ -42,7 +42,9 @@
   ObjectWaiter * volatile _next;
   ObjectWaiter * volatile _prev;
   Thread*       _thread;
+#if INCLUDE_JFR
   jlong         _notifier_tid;
+#endif
   ParkEvent *   _event;
   volatile int  _notified ;
   volatile TStates TState ;