diff --git a/bitbake/lib/bb/persist_data.py b/bitbake/lib/bb/persist_data.py
index 9e20a837a4..ce84a15825 100644
--- a/bitbake/lib/bb/persist_data.py
+++ b/bitbake/lib/bb/persist_data.py
@@ -208,7 +208,7 @@ class SQLTable(collections.abc.MutableMapping):
 
     def __lt__(self, other):
         if not isinstance(other, Mapping):
-            raise NotImplemented
+            raise NotImplementedError()
 
         return len(self) < len(other)