diff --git a/src/caosdb/common/models.py b/src/caosdb/common/models.py
index 931065ec9a33371a21b59be09513e388b25d1766..bf3544599520225be87c9a71404b7236055cc944 100644
--- a/src/caosdb/common/models.py
+++ b/src/caosdb/common/models.py
@@ -662,7 +662,8 @@ class Entity(object):
 
         The tuple contains None for all values that are not available in the
         entity. That does not necessarily mean, that the values are not stored
-        in the database.
+        in the database (e.g. if a single entity was retrieved without
+        referenced entities).
 
         Parameters
         ----------
@@ -3232,7 +3233,8 @@ class Container(list):
 
         The tuple contains None for all values that are not available in the
         entity. That does not necessarily mean, that the values are not stored
-        in the database.
+        in the database (e.g. if a single entity was retrieved without
+        referenced entities).
 
         Parameters
         ----------