diff --git a/contract/models/__init__.py b/contract/models/__init__.py
index 3a3ee1be..529169df 100644
--- a/contract/models/__init__.py
+++ b/contract/models/__init__.py
@@ -3,7 +3,7 @@
 
 from . import account_analytic_contract
 from . import account_analytic_account
-from . import account_analytic_invoice_line
-from . import account_analytic_contract_line
+from . import account_analytic_invoice_line_bis
+from . import account_analytic_contract_line_bis
 from . import account_invoice
 from . import res_partner
diff --git a/contract/models/account_analytic_contract_line.py b/contract/models/account_analytic_contract_line_bis.py
similarity index 100%
rename from contract/models/account_analytic_contract_line.py
rename to contract/models/account_analytic_contract_line_bis.py
diff --git a/contract/models/account_analytic_invoice_line.py b/contract/models/account_analytic_invoice_line_bis.py
similarity index 100%
rename from contract/models/account_analytic_invoice_line.py
rename to contract/models/account_analytic_invoice_line_bis.py