diff --git a/src/events.ts b/src/events.ts
index 82089e2..b161542 100644
--- a/src/events.ts
+++ b/src/events.ts
@@ -265,11 +265,11 @@ export type EventScraperProps = {
     deleteOptions?: DeleteOptions;
     tokenMetadataMap?: TokenMetadataMap;
     postProcess?: any;
-    filterFunction?: (events: Event[], transaction: Transaction, allowedTxnList?: Set<string>) => Event[];
+    filterFunction?: (events: Event[], transaction: Transaction, requiredTxnList?: Set<string>) => Event[];
     filterFunctionGetContext?: (
         events: Event[],
         web3Source: Web3Source,
-        allowedTxnList?: Set<string>,
+        requiredTxnList?: Set<string>,
     ) => Promise<Event[]>;
 };
 
diff --git a/src/filters/erc20_transfer_events.ts b/src/filters/erc20_transfer_events.ts
index 5f02e39..47b0931 100644
--- a/src/filters/erc20_transfer_events.ts
+++ b/src/filters/erc20_transfer_events.ts
@@ -5,13 +5,13 @@ import { getParseTxsAsync } from '../scripts/utils/web3_utils';
 export async function filterERC20TransferEventsGetContext(
     events: Event[],
     web3Source: Web3Source,
-    allowedTxnList?: Set<string>,
+    requiredTxnList?: Set<string>,
 ): Promise<Event[]> {
     if (events.length > 0) {
         const txHashes = events.map((log: Event) => log.transactionHash);
         let validTxHashSet: Set<string>;
-        if (allowedTxnList && allowedTxnList.size > 0) {
-            validTxHashSet = allowedTxnList;
+        if (requiredTxnList && requiredTxnList.size > 0) {
+            validTxHashSet = requiredTxnList;
         } else {
             const txData = await getParseTxsAsync(web3Source, txHashes);
             const filteredTxsHashes = txData.parsedTxs
@@ -30,11 +30,11 @@ export async function filterERC20TransferEventsGetContext(
 export function filterERC20TransferEvents(
     events: Event[],
     transaction: Transaction,
-    allowedTxnList?: Set<string>,
+    requiredTxnList?: Set<string>,
 ): Event[] {
     const filteredEvents = new Set<Event>();
 
-    if (allowedTxnList && allowedTxnList.size > 0 && allowedTxnList.has(transaction.transactionHash)) {
+    if (requiredTxnList && requiredTxnList.size > 0 && requiredTxnList.has(transaction.transactionHash)) {
         events.filter((e) => e !== null).forEach((e) => filteredEvents.add(e));
     }