diff --git a/src/RelLib/__init__.py b/src/RelLib/__init__.py
index 3f666e8b6..ec5f44868 100644
--- a/src/RelLib/__init__.py
+++ b/src/RelLib/__init__.py
@@ -39,6 +39,7 @@ from _SourceRef import SourceRef
 from _Url import Url
 
 # Primary objects
+from _PrimaryObject import PrimaryObject
 from _Person import Person
 from _Family import Family
 from _Event import Event