diff --git a/osinaweb/osinacore/tasks.py b/osinaweb/osinacore/tasks.py
index 13d12c95..1b1a2ac4 100644
--- a/osinaweb/osinacore/tasks.py
+++ b/osinaweb/osinacore/tasks.py
@@ -18,7 +18,7 @@ def set_offline():
     # Create a new connection record for each user with status set to 'Offline'
     for user in users_without_working_points:
         last_connection = Connection.objects.filter(user=user).order_by('-date').first()
-        if last_connection is None or last_connection.status != 'Offline':
+        if last_connection.status != 'Offline':
             Connection.objects.create(
                 status='Offline',
                 date=timezone.now(),
diff --git a/osinaweb/osinaweb/__pycache__/celery.cpython-310.pyc b/osinaweb/osinaweb/__pycache__/celery.cpython-310.pyc
index 910dfb3b..8557f165 100644
Binary files a/osinaweb/osinaweb/__pycache__/celery.cpython-310.pyc and b/osinaweb/osinaweb/__pycache__/celery.cpython-310.pyc differ
diff --git a/osinaweb/osinaweb/celery.py b/osinaweb/osinaweb/celery.py
index 3c37056b..3cf1c450 100644
--- a/osinaweb/osinaweb/celery.py
+++ b/osinaweb/osinaweb/celery.py
@@ -18,6 +18,6 @@ celery_app.autodiscover_tasks()
 celery_app.conf.beat_schedule = {
     'set-offline-every-minute': {
         'task': 'osinacore.tasks.set_offline',  # Assuming your task is in tasks.py in your_app
-        'schedule': crontab(minute='*/1'),  # Run every minute
+        'schedule': crontab(minute='*/15'),  # Run every minute
     },
 }