--- a/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.cpp	Fri Sep 27 13:41:07 2013 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1MarkSweep.cpp	Tue Sep 24 14:46:29 2013 +0200
@@ -220,7 +220,7 @@
 public:
   G1PrepareCompactClosure(CompactibleSpace* cs)
   : _g1h(G1CollectedHeap::heap()),
-    _mrbs(G1CollectedHeap::heap()->mr_bs()),
+    _mrbs(_g1h->g1_barrier_set()),
     _cp(NULL, cs, cs->initialize_threshold()),
     _humongous_proxy_set("G1MarkSweep Humongous Proxy Set") { }