diff --git a/locking/admin.py b/locking/admin.py
index 678bb5c..3eae454 100644
--- a/locking/admin.py
+++ b/locking/admin.py
@@ -49,7 +49,7 @@ def locking_media(self, obj=None):
         info = (opts.app_label, getattr(opts, 'model_name', None) or getattr(opts, 'module_name', None))
         pk = getattr(obj, 'pk', None) or 0
         return forms.Media(js=(
-            reverse('admin:%s_%s_lock_js' % info, args=[pk]),))
+            reverse('admin:%s_%s_lock_js' % info, args=[pk], current_app=self.admin_site.name),))
 
     def get_urls(self):
         """
diff --git a/setup.py b/setup.py
index f15ca48..0ac8552 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 README = os.path.join(os.path.dirname(__file__), 'README.md')
 long_description = open(README).read()
 setup(name='django-locking',
-      version='2.2.19.dev6',
+      version='2.2.19.dev8',
       description=("Prevents users from doing concurrent editing in Django. Works out of the box in the admin interface, or you can integrate it with your own apps using a public API."),
       long_description=long_description,
       classifiers=['Development Status :: 4 - Beta',