--- a/hotspot/src/share/vm/gc/parallel/psOldGen.cpp	Wed Jun 17 14:44:54 2015 +0200
+++ b/hotspot/src/share/vm/gc/parallel/psOldGen.cpp	Wed Jun 17 17:29:56 2015 +0200
@@ -199,7 +199,7 @@
   // Allocations in the old generation need to be reported
   if (res != NULL) {
     ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
-    heap->size_policy()->tenured_allocation(word_size);
+    heap->size_policy()->tenured_allocation(word_size * HeapWordSize);
   }
 
   return res;