diff --git a/src/mnode/src/mnodeDb.c b/src/mnode/src/mnodeDb.c
index 3666d61adc8b2c10b1c7615422b4db7031bc1251..69783defc7aa8065f8426a534e4a1c6dbc172f54 100644
--- a/src/mnode/src/mnodeDb.c
+++ b/src/mnode/src/mnodeDb.c
@@ -84,9 +84,12 @@ static int32_t mnodeDbActionDelete(SSdbOper *pOper) {
   mnodeDropAllChildTables(pDb);
   mnodeDropAllSuperTables(pDb);
   mnodeDropAllDbVgroups(pDb);
-  mnodeDropDbFromAcct(pAcct, pDb);
-  mnodeDecAcctRef(pAcct);
-  
+
+  if (pAcct) {
+    mnodeDropDbFromAcct(pAcct, pDb);
+    mnodeDecAcctRef(pAcct);
+  }
+
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/mnode/src/mnodeTable.c b/src/mnode/src/mnodeTable.c
index 478e7790fba3405139d94548b219d2e2e857e12e..0ff198bf8f709cd48eb238e94c31ff3f33a2ea33 100644
--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -157,10 +157,12 @@ static int32_t mnodeChildTableActionDelete(SSdbOper *pOper) {
   if (pDb != NULL) pAcct = mnodeGetAcct(pDb->acct);
 
   if (pTable->info.type == TSDB_CHILD_TABLE) {
-    grantRestore(TSDB_GRANT_TIMESERIES, pTable->superTable->numOfColumns - 1);
-    if (pAcct != NULL) pAcct->acctInfo.numOfTimeSeries -= (pTable->superTable->numOfColumns - 1);
-    mnodeRemoveTableFromStable(pTable->superTable, pTable);
-    mnodeDecTableRef(pTable->superTable);
+    if (pTable->superTable) {
+      grantRestore(TSDB_GRANT_TIMESERIES, pTable->superTable->numOfColumns - 1);
+      if (pAcct != NULL) pAcct->acctInfo.numOfTimeSeries -= (pTable->superTable->numOfColumns - 1);
+      mnodeRemoveTableFromStable(pTable->superTable, pTable);
+      mnodeDecTableRef(pTable->superTable);
+    }
   } else {
     grantRestore(TSDB_GRANT_TIMESERIES, pTable->numOfColumns - 1);
     if (pAcct != NULL) pAcct->acctInfo.numOfTimeSeries -= (pTable->numOfColumns - 1);