--- old/src/share/vm/gc_implementation/shenandoah/shenandoahNormalMode.cpp	2019-11-11 16:10:00.101342713 +0100
+++ new/src/share/vm/gc_implementation/shenandoah/shenandoahNormalMode.cpp	2019-11-11 16:10:00.019342717 +0100
@@ -35,6 +35,7 @@
   // 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);
 }