--- old/src/share/vm/gc_implementation/g1/heapRegion.cpp	2013-08-01 08:10:08.000000000 +0200
+++ new/src/share/vm/gc_implementation/g1/heapRegion.cpp	2013-08-01 08:10:07.000000000 +0200
@@ -314,6 +314,11 @@
     region_size = MAX_REGION_SIZE;
   }
 
+  if (region_size != G1HeapRegionSize) {
+    // Update the flag to make sure that PrintFlagsFinal logs the correct value
+    FLAG_SET_ERGO(uintx, G1HeapRegionSize, region_size);
+  }
+
   // And recalculate the log.
   region_size_log = log2_long((jlong) region_size);