--- a/src/hotspot/share/prims/resolvedMethodTable.cpp	Thu Apr 25 05:54:54 2019 -0700
+++ b/src/hotspot/share/prims/resolvedMethodTable.cpp	Thu Apr 25 10:56:31 2019 -0400
@@ -251,7 +251,7 @@
 }
 
 void ResolvedMethodTable::trigger_concurrent_work() {
-  MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag);
+  MutexLocker ml(Service_lock, Mutex::_no_safepoint_check_flag);
   _has_work = true;
   Service_lock->notify_all();
 }