diff --git a/external_file_location/task.py b/external_file_location/task.py
index 8e2460df..11486f1e 100644
--- a/external_file_location/task.py
+++ b/external_file_location/task.py
@@ -53,7 +53,7 @@ class Task(models.Model):
         res = []
         for cls in itersubclasses(AbstractTask):
             if cls._synchronize_type \
-                and ('protocol' not in self._context
+                and ('protocol' not in self._context \
                     or cls._key == self._context['protocol']):
                 cls_info = (cls._key + '_' + cls._synchronize_type,
                             cls._name + ' ' + cls._synchronize_type)