--- old/src/share/vm/gc_implementation/shenandoah/heuristics/shenandoahAggressiveHeuristics.cpp	2019-11-11 16:09:47.912343384 +0100
+++ new/src/share/vm/gc_implementation/shenandoah/heuristics/shenandoahAggressiveHeuristics.cpp	2019-11-11 16:09:47.827343389 +0100
@@ -48,6 +48,7 @@
   // Final configuration checks
   SHENANDOAH_CHECK_FLAG_SET(ShenandoahLoadRefBarrier);
   SHENANDOAH_CHECK_FLAG_SET(ShenandoahSATBBarrier);
+  SHENANDOAH_CHECK_FLAG_SET(ShenandoahKeepAliveBarrier);
   SHENANDOAH_CHECK_FLAG_SET(ShenandoahCASBarrier);
   SHENANDOAH_CHECK_FLAG_SET(ShenandoahCloneBarrier);
 }