diff a/src/hotspot/share/gc/g1/sparsePRT.cpp b/src/hotspot/share/gc/g1/sparsePRT.cpp
--- a/src/hotspot/share/gc/g1/sparsePRT.cpp
+++ b/src/hotspot/share/gc/g1/sparsePRT.cpp
@@ -103,13 +103,11 @@
   clear();
 }
 
 RSHashTable::~RSHashTable() {
   FREE_C_HEAP_ARRAY(SparsePRTEntry, _entries);
-  _entries = NULL;
   FREE_C_HEAP_ARRAY(int, _buckets);
-  _buckets = NULL;
 }
 
 void RSHashTable::clear() {
   _occupied_entries = 0;
   _occupied_cards = 0;