diff --git a/bot/services/subscription_service.py b/bot/services/subscription_service.py
index f9557c2..12e9377 100644
--- a/bot/services/subscription_service.py
+++ b/bot/services/subscription_service.py
@@ -232,23 +232,10 @@ class SubscriptionService:
                     "panel_user_uuid": actual_panel_uuid_from_api
                 }
 
-                if (
-                    actual_panel_username_from_api
-                    and actual_panel_username_from_api
-                    != panel_username_on_panel_standard
-                    and (
-                        db_user.username is None
-                        or db_user.username != actual_panel_username_from_api
-                    )
-                ):
-                    update_data_for_local_user["username"] = (
-                        actual_panel_username_from_api
-                    )
-
+                # Do not overwrite Telegram username with panel username.
+                # Only update the local linkage to panel UUID here.
                 await user_dal.update_user(session, user_id, update_data_for_local_user)
                 db_user.panel_user_uuid = actual_panel_uuid_from_api
-                if "username" in update_data_for_local_user:
-                    db_user.username = update_data_for_local_user["username"]
                 panel_user_created_or_linked_now = True
                 current_local_panel_uuid = actual_panel_uuid_from_api
         else: