--- a/hotspot/src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp	Fri Sep 26 01:40:31 2014 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp	Sat Sep 27 15:11:41 2014 +0200
@@ -128,9 +128,7 @@
 }
 
 uint ConcurrentG1Refine::thread_num() {
-  uint n_threads = (G1ConcRefinementThreads > 0) ? G1ConcRefinementThreads
-                                                : ParallelGCThreads;
-  return MAX2<uint>(n_threads, 1);
+  return G1ConcRefinementThreads;
 }
 
 void ConcurrentG1Refine::print_worker_threads_on(outputStream* st) const {