diff --git a/statediff/indexer/database/file/config.go b/statediff/indexer/database/file/config.go
index a075e896b..57c20fe8b 100644
--- a/statediff/indexer/database/file/config.go
+++ b/statediff/indexer/database/file/config.go
@@ -41,7 +41,7 @@ var TestConfig = Config{
 		GenesisBlock: "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3",
 		NetworkID:    "1",
 		ChainID:      1,
-		ID:           "mockNodeID",
+		ID:           "1",
 		ClientName:   "go-ethereum",
 	},
 }
diff --git a/statediff/indexer/database/file/writer.go b/statediff/indexer/database/file/writer.go
index 3c11b5eea..2e84250e5 100644
--- a/statediff/indexer/database/file/writer.go
+++ b/statediff/indexer/database/file/writer.go
@@ -197,8 +197,10 @@ func (sqw *SQLWriter) upsertIPLDRaw(blockNumber string, codec, mh uint64, raw []
 }
 
 func (sqw *SQLWriter) upsertHeaderCID(header models.HeaderModel) {
+	nodeId := fmt.Sprintf("{%s}", header.NodeID)
+	// {'1'}
 	stmt := fmt.Sprintf(headerInsert, header.BlockNumber, header.BlockHash, header.ParentHash, header.CID,
-		header.TotalDifficulty, header.NodeID, header.Reward, header.StateRoot, header.TxRoot,
+		header.TotalDifficulty, nodeId, header.Reward, header.StateRoot, header.TxRoot,
 		header.RctRoot, header.UncleRoot, header.Bloom, header.Timestamp, header.MhKey, 1, header.Coinbase)
 	sqw.stmts <- []byte(stmt)
 	indexerMetrics.blocks.Inc(1)