diff --git a/src/include/utils/knl_localsystabcache.h b/src/include/utils/knl_localsystabcache.h
index ba5eadd2c..8b3be1585 100644
--- a/src/include/utils/knl_localsystabcache.h
+++ b/src/include/utils/knl_localsystabcache.h
@@ -44,6 +44,9 @@ public:
     void ResetInitFlag(bool include_shared)
     {
         for (int cache_id = 0; cache_id < SysCacheSize; cache_id++) {
+            if (local_systupcaches[cache_id] == NULL) {
+                continue;
+            }
             if (!include_shared && local_systupcaches[cache_id]->GetCCRelIsShared()) {
                 continue;
             }
@@ -73,6 +76,9 @@ public:
     void ReleaseGlobalRefcount(bool include_shared)
     {
         for (int cache_id = 0; cache_id < SysCacheSize; cache_id++) {
+            if (local_systupcaches[cache_id] == NULL) {
+                continue;
+            }
             if (!include_shared && local_systupcaches[cache_id]->GetCCRelIsShared()) {
                 continue;
             }