diff --git a/arkindex_worker/worker/element.py b/arkindex_worker/worker/element.py
index db0d8905d19aa129a199214db032665298b22c9c..19208e257e5db5cc38ecd145526d0398d8160f03 100644
--- a/arkindex_worker/worker/element.py
+++ b/arkindex_worker/worker/element.py
@@ -416,7 +416,7 @@ class ElementMixin(object):
                 )
             if worker_run is not None:
                 # If worker_run=False, filter by manual worker_run e.g. None
-                worker_run_id = worker_run if worker_run else None
+                worker_run_id = worker_run or None
                 query = query.where(CachedElement.worker_run_id == worker_run_id)
 
             return query