diff --git a/trytond/tests/__init__.py b/trytond/tests/__init__.py
index 951ec179ce..d098f73a28 100644
--- a/trytond/tests/__init__.py
+++ b/trytond/tests/__init__.py
@@ -131,11 +131,11 @@ def register():
         CopyOne2ManyReference,
         CopyOne2ManyReferenceTarget,
         CopyMany2Many,
-        CopyMany2ManyTarget,
         CopyMany2ManyRelation,
+        CopyMany2ManyTarget,
         CopyMany2ManyReference,
-        CopyMany2ManyReferenceTarget,
         CopyMany2ManyReferenceRelation,
+        CopyMany2ManyReferenceTarget,
         Many2OneTarget,
         Many2OneDomainValidation,
         module='tests', type_='model')