--- a/test/hotspot/gtest/threadHelper.inline.hpp	Thu Apr 25 05:54:54 2019 -0700
+++ b/test/hotspot/gtest/threadHelper.inline.hpp	Thu Apr 25 10:56:31 2019 -0400
@@ -105,7 +105,7 @@
       Threads::add(this);
     }
     {
-      MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag);
+      MutexLocker ml(SR_lock(), Mutex::_no_safepoint_check_flag);
     }
   }