diff --git a/tests/__init__.py b/tests/__init__.py
index b1fbc5724f..544f41f7ae 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -2,3 +2,5 @@
 #this repository contains the full copyright notices and license terms.
 
 from .test_purchase_invoice_line_standalone import suite
+
+__all__ = ['suite']