diff --git a/__init__.py b/__init__.py
index 1c866376b2..8fcedeb73f 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,6 +1,6 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 
-from sale import *
-from configuration import *
-from invoice import *
+from .sale import *
+from .configuration import *
+from .invoice import *
diff --git a/tests/__init__.py b/tests/__init__.py
index df19c7758d..656a24232e 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,4 +1,4 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 
-from test_sale import suite
+from .test_sale import suite