diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c9d1783d..5ec018855 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Restricted the modification of activity tags in the impersonation mode
 - Hardened the endpoint of the public access for portfolio sharing by restricting it to public accesses
 - Improved the language localization by translating various tooltips across the application
 - Improved the language localization for Ukrainian (`uk`)
diff --git a/apps/api/src/app/portfolio/portfolio.controller.ts b/apps/api/src/app/portfolio/portfolio.controller.ts
index ca94605f9..13cc0eae7 100644
--- a/apps/api/src/app/portfolio/portfolio.controller.ts
+++ b/apps/api/src/app/portfolio/portfolio.controller.ts
@@ -672,13 +672,11 @@ export class PortfolioController {
   @UseGuards(AuthGuard('jwt'), HasPermissionGuard)
   public async updateHoldingTags(
     @Body() data: UpdateHoldingTagsDto,
-    @Headers(HEADER_KEY_IMPERSONATION.toLowerCase()) impersonationId: string,
     @Param('dataSource') dataSource: DataSource,
     @Param('symbol') symbol: string
   ): Promise<void> {
     const holding = await this.portfolioService.getHolding({
       dataSource,
-      impersonationId,
       symbol,
       userId: this.request.user.id
     });
@@ -692,7 +690,6 @@ export class PortfolioController {
 
     await this.portfolioService.updateTags({
       dataSource,
-      impersonationId,
       symbol,
       tags: data.tags,
       userId: this.request.user.id
diff --git a/apps/api/src/app/portfolio/portfolio.service.ts b/apps/api/src/app/portfolio/portfolio.service.ts
index 41697b346..b440684da 100644
--- a/apps/api/src/app/portfolio/portfolio.service.ts
+++ b/apps/api/src/app/portfolio/portfolio.service.ts
@@ -777,7 +777,7 @@ export class PortfolioService {
     symbol,
     userId
   }: {
-    impersonationId: string;
+    impersonationId?: string;
     userId: string;
   } & AssetProfileIdentifier): Promise<PortfolioHoldingResponse> {
     userId = await this.getUserId(impersonationId, userId);
@@ -1377,17 +1377,13 @@ export class PortfolioService {
 
   public async updateTags({
     dataSource,
-    impersonationId,
     symbol,
     tags,
     userId
   }: {
-    impersonationId: string;
     tags: Tag[];
     userId: string;
   } & AssetProfileIdentifier) {
-    userId = await this.getUserId(impersonationId, userId);
-
     await this.activitiesService.assignTags({
       dataSource,
       symbol,