diff --git a/CHANGELOG.md b/CHANGELOG.md
index 822f3cf3..5475f24e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - build(packer): set `autologin-user` to `ubo` in `/etc/lightdm/lightdm.conf`
 - feat(core): improve update notification for phase-2 of the update process and add a spinner on top-left
+- fix(core): avoid side-effects after `FinishEvent` is dispatched.
 
 ## Version 0.15.8
 
diff --git a/ubo_app/store/main.py b/ubo_app/store/main.py
index 0b87d557..0cad87a9 100644
--- a/ubo_app/store/main.py
+++ b/ubo_app/store/main.py
@@ -7,7 +7,7 @@
 from asyncio import Handle
 from datetime import datetime
 from pathlib import Path
-from threading import current_thread, main_thread
+from threading import Event, current_thread, main_thread
 from types import GenericAlias
 from typing import TYPE_CHECKING, Any, TypeVar, cast, get_origin, overload
 
@@ -20,6 +20,7 @@
     CombineReducerAction,
     CreateStoreOptions,
     FinishAction,
+    FinishEvent,
     InitAction,
     Store,
     combine_reducers,
@@ -259,7 +260,9 @@ def action_middleware(action: ActionType) -> ActionType:
     return action
 
 
-def event_middleware(event: EventType) -> EventType:
+def event_middleware(event: EventType) -> EventType | None:
+    if is_finalizing.is_set():
+        return None
     logger.debug(
         'Event dispatched',
         extra={'event': event},
@@ -286,6 +289,11 @@ def event_middleware(event: EventType) -> EventType:
 subscribe_event = store.subscribe_event
 view = store.view
 
+
+is_finalizing = Event()
+
+subscribe_event(FinishEvent, lambda: is_finalizing.set())
+
 dispatch(InitAction())
 
 if DEBUG_MODE: