diff --git a/apps/api/src/app/endpoints/market-data/market-data.controller.ts b/apps/api/src/app/endpoints/market-data/market-data.controller.ts
index 0905a50bb..5dad0511f 100644
--- a/apps/api/src/app/endpoints/market-data/market-data.controller.ts
+++ b/apps/api/src/app/endpoints/market-data/market-data.controller.ts
@@ -22,6 +22,7 @@ import {
   HttpException,
   Inject,
   Param,
+  ParseIntPipe,
   Post,
   Query,
   UseGuards
@@ -45,7 +46,8 @@ export class MarketDataController {
   @HasPermission(permissions.readMarketDataOfMarkets)
   @UseGuards(AuthGuard('jwt'), HasPermissionGuard)
   public async getMarketDataOfMarkets(
-    @Query('includeHistoricalData') includeHistoricalData = 0
+    @Query('includeHistoricalData', new ParseIntPipe({ optional: true }))
+    includeHistoricalData = 0
   ): Promise<MarketDataOfMarketsResponse> {
     const [
       marketDataFearAndGreedIndexCryptocurrencies,
diff --git a/apps/api/src/app/symbol/symbol.controller.ts b/apps/api/src/app/symbol/symbol.controller.ts
index 501692ae5..d94ffb4dc 100644
--- a/apps/api/src/app/symbol/symbol.controller.ts
+++ b/apps/api/src/app/symbol/symbol.controller.ts
@@ -14,6 +14,7 @@ import {
   HttpException,
   Inject,
   Param,
+  ParseIntPipe,
   Query,
   UseGuards,
   UseInterceptors
@@ -69,7 +70,8 @@ export class SymbolController {
   public async getSymbolData(
     @Param('dataSource') dataSource: DataSource,
     @Param('symbol') symbol: string,
-    @Query('includeHistoricalData') includeHistoricalData = 0
+    @Query('includeHistoricalData', new ParseIntPipe({ optional: true }))
+    includeHistoricalData = 0
   ): Promise<SymbolItem> {
     if (!DataSource[dataSource]) {
       throw new HttpException(