diff --git a/__init__.py b/__init__.py
index edddecede8..85e38eeb8f 100644
--- a/__init__.py
+++ b/__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 opportunity import *
+from .opportunity import *
diff --git a/tests/__init__.py b/tests/__init__.py
index 0a37d9ebb2..3edddbc343 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_opportunity import suite
+from .test_sale_opportunity import suite