--- old/src/hotspot/share/gc/shared/genArguments.cpp	2019-09-07 21:51:31.000000000 +0200
+++ new/src/hotspot/share/gc/shared/genArguments.cpp	2019-09-07 21:51:31.000000000 +0200
@@ -196,8 +196,6 @@
     }
   }
 
-  always_do_update_barrier = UseConcMarkSweepGC;
-
   DEBUG_ONLY(assert_flags();)
 }