diff --git a/apps/api/src/app/portfolio/portfolio.controller.ts b/apps/api/src/app/portfolio/portfolio.controller.ts
index 449d4c9dd..fd11334d9 100644
--- a/apps/api/src/app/portfolio/portfolio.controller.ts
+++ b/apps/api/src/app/portfolio/portfolio.controller.ts
@@ -14,7 +14,6 @@ import {
   PortfolioChart,
   PortfolioDetails,
   PortfolioInvestments,
-  PortfolioPerformance,
   PortfolioPerformanceResponse,
   PortfolioPublicDetails,
   PortfolioReport,
@@ -205,6 +204,7 @@ export class PortfolioController {
 
   @Get('performance')
   @UseGuards(AuthGuard('jwt'))
+  @UseInterceptors(TransformDataSourceInResponseInterceptor)
   public async getPerformance(
     @Headers('impersonation-id') impersonationId: string,
     @Query('range') range
diff --git a/apps/api/src/interceptors/transform-data-source-in-response.interceptor.ts b/apps/api/src/interceptors/transform-data-source-in-response.interceptor.ts
index 720f02b67..2aeb895fe 100644
--- a/apps/api/src/interceptors/transform-data-source-in-response.interceptor.ts
+++ b/apps/api/src/interceptors/transform-data-source-in-response.interceptor.ts
@@ -41,6 +41,14 @@ export class TransformDataSourceInResponseInterceptor<T>
             data.dataSource = encodeDataSource(data.dataSource);
           }
 
+          if (data.errors) {
+            for (const error of data.errors) {
+              if (error.dataSource) {
+                error.dataSource = encodeDataSource(error.dataSource);
+              }
+            }
+          }
+
           if (data.holdings) {
             for (const symbol of Object.keys(data.holdings)) {
               if (data.holdings[symbol].dataSource) {