diff --git a/__init__.py b/__init__.py
index 74463bd435..fba28be6fa 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,5 +1,5 @@
 #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 ir import *
-from product import *
+from .ir import *
+from .product import *
diff --git a/tests/__init__.py b/tests/__init__.py
index ec99a1e1f7..a1e1c5f080 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_product_cost_history import suite
+from .test_product_cost_history import suite