--- old/src/share/vm/gc_implementation/g1/heapRegion.cpp	2014-06-12 03:58:35.000000000 -0400
+++ new/src/share/vm/gc_implementation/g1/heapRegion.cpp	2014-06-12 03:58:35.000000000 -0400
@@ -161,7 +161,7 @@
   if (FLAG_IS_DEFAULT(G1HeapRegionSize)) {
     size_t average_heap_size = (initial_heap_size + max_heap_size) / 2;
     region_size = MAX2(average_heap_size / TARGET_REGION_NUMBER,
-                       (uintx) MIN_REGION_SIZE);
+                       (size_t) MIN_REGION_SIZE);
   }
 
   int region_size_log = log2_long((jlong) region_size);