diff --git a/addons/account/tests/test_account_move_in_invoice.py b/addons/account/tests/test_account_move_in_invoice.py
index cf6ecd566bb..59bf4f96847 100644
--- a/addons/account/tests/test_account_move_in_invoice.py
+++ b/addons/account/tests/test_account_move_in_invoice.py
@@ -125,6 +125,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
             'amount_tax': 168.0,
             'amount_total': 1128.0,
         }
+        cls.env.user.groups_id += cls.env.ref('uom.group_uom')
 
     def setUp(self):
         super(TestAccountMoveInInvoiceOnchanges, self).setUp()
diff --git a/addons/account/tests/test_account_move_out_invoice.py b/addons/account/tests/test_account_move_out_invoice.py
index 07494c7bc9e..8421167eb1b 100644
--- a/addons/account/tests/test_account_move_out_invoice.py
+++ b/addons/account/tests/test_account_move_out_invoice.py
@@ -128,6 +128,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
             'amount_tax': 210.0,
             'amount_total': 1410.0,
         }
+        cls.env.user.groups_id += cls.env.ref('uom.group_uom')
 
     def setUp(self):
         super(TestAccountMoveOutInvoiceOnchanges, self).setUp()