diff --git a/src/caosdb/common/models.py b/src/caosdb/common/models.py
index 711f3f94e2d70e31043aa73f5ad8cf24eb2f1d7d..eea1ef7cb98ba8f80f256dede248fece373108e3 100644
--- a/src/caosdb/common/models.py
+++ b/src/caosdb/common/models.py
@@ -2737,7 +2737,7 @@ class Container(list):
                         ee = EntityError(
                             "This entity has no identifier. It cannot be retrieved.",
                             entity)
-                        raise TransactionError(ee) 
+                        raise TransactionError(ee)
                     else:
                         entity.is_valid = lambda: False
         else: