diff --git a/mayan/apps/checkouts/apps.py b/mayan/apps/checkouts/apps.py
index 10c25c429c..6ab7e17fd8 100644
--- a/mayan/apps/checkouts/apps.py
+++ b/mayan/apps/checkouts/apps.py
@@ -16,13 +16,13 @@ from .links import (
     link_checkin_document, link_checkout_document, link_checkout_info,
     link_checkout_list
 )
+from .literals import CHECK_EXPIRED_CHECK_OUTS_INTERVAL
 from .models import DocumentCheckout
 from .permissions import (
     permission_document_checkin, permission_document_checkin_override,
     permission_document_checkout
 )
 
-CHECK_EXPIRED_CHECK_OUTS_INTERVAL = 60  # Lowest check out expiration allowed
 
 
 class CheckoutsApp(MayanAppConfig):
diff --git a/mayan/apps/checkouts/literals.py b/mayan/apps/checkouts/literals.py
index 400423a376..1b4d41e4e3 100644
--- a/mayan/apps/checkouts/literals.py
+++ b/mayan/apps/checkouts/literals.py
@@ -2,6 +2,9 @@ from __future__ import unicode_literals
 
 from django.utils.translation import ugettext_lazy as _
 
+CHECK_EXPIRED_CHECK_OUTS_INTERVAL = 60  # Lowest check out expiration allowed
+CHECKOUT_EXPIRATION_LOCK_EXPIRE = 50
+
 STATE_CHECKED_OUT = 'checkedout'
 STATE_CHECKED_IN = 'checkedin'
 
@@ -9,3 +12,4 @@ STATE_LABELS = {
     STATE_CHECKED_OUT: _('Checked out'),
     STATE_CHECKED_IN: _('Checked in/available'),
 }
+
diff --git a/mayan/apps/checkouts/tasks.py b/mayan/apps/checkouts/tasks.py
index a6c561267a..6319a3d261 100644
--- a/mayan/apps/checkouts/tasks.py
+++ b/mayan/apps/checkouts/tasks.py
@@ -5,9 +5,9 @@ import logging
 from lock_manager import Lock, LockError
 from mayan.celery import app
 
+from .literals import CHECKOUT_EXPIRATION_LOCK_EXPIRE
 from .models import DocumentCheckout
 
-LOCK_EXPIRE = 50
 logger = logging.getLogger(__name__)
 
 
@@ -17,7 +17,7 @@ def task_check_expired_check_outs():
     lock_id = 'task_expired_check_outs'
     try:
         logger.debug('trying to acquire lock: %s', lock_id)
-        lock = Lock.acquire_lock(lock_id, LOCK_EXPIRE)
+        lock = Lock.acquire_lock(name=lock_id, timeout=CHECKOUT_EXPIRATION_LOCK_EXPIRE)
         logger.debug('acquired lock: %s', lock_id)
         DocumentCheckout.objects.check_in_expired_check_outs()
         lock.release()