--- a/src/hotspot/share/gc/shared/genArguments.cpp	Thu Oct 17 20:27:44 2019 +0100
+++ b/src/hotspot/share/gc/shared/genArguments.cpp	Thu Oct 17 20:53:35 2019 +0100
@@ -90,7 +90,7 @@
   }
   // If needed, synchronize MinHeapSize size and InitialHeapSize
   if (MinHeapSize < smallest_heap_size) {
-    MinHeapSize = smallest_heap_size;
+    FLAG_SET_ERGO(MinHeapSize, smallest_heap_size);
     if (InitialHeapSize < MinHeapSize) {
       FLAG_SET_ERGO(InitialHeapSize, smallest_heap_size);
     }
@@ -196,8 +196,6 @@
     }
   }
 
-  always_do_update_barrier = UseConcMarkSweepGC;
-
   DEBUG_ONLY(assert_flags();)
 }