diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index 747b22a7a8058422e047329cff4b6d9440ea502e..5a91d8f7901ff0278db0191003b7f451c8597bf6 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -2216,7 +2216,7 @@ static int32_t createDataBlocksInfo(STsdbQueryHandle* pQueryHandle, int32_t numO
     SBlock* pBlock = pTableCheck->pCompInfo->blocks;
     sup.numOfBlocksPerTable[numOfQualTables] = pTableCheck->numOfBlocks;
 
-    char* buf = calloc(1, sizeof(STableBlockInfo) * pTableCheck->numOfBlocks);
+    char* buf = malloc(sizeof(STableBlockInfo) * pTableCheck->numOfBlocks);
     if (buf == NULL) {
       cleanBlockOrderSupporter(&sup, numOfQualTables);
       return TSDB_CODE_TDB_OUT_OF_MEMORY;