diff --git a/BE/apps/api-server/src/modules/connection/dto/connection.query.dto.ts b/BE/apps/api-server/src/modules/connection/dto/connection.query.dto.ts
index 9e320e3c..77ca3177 100644
--- a/BE/apps/api-server/src/modules/connection/dto/connection.query.dto.ts
+++ b/BE/apps/api-server/src/modules/connection/dto/connection.query.dto.ts
@@ -9,6 +9,5 @@ export class ConnectionQueryDto {
   @Transform(({ value, obj }) => {
     return obj.type === 'mindmap' ? Number(value) : value;
   })
-  @IsString()
   id: string | number;
 }