diff --git a/models/res_partner_contract_annex.py b/models/res_partner_contract_annex.py
index cbafbf7..04b9be3 100644
--- a/models/res_partner_contract_annex.py
+++ b/models/res_partner_contract_annex.py
@@ -31,8 +31,7 @@ class ContractOrderAnnex(models.Model, IDocument, Extension):
     counter = fields.Integer(string="№", help="Counter of Contract Annexes",)
     currency_id = fields.Many2one(related="company_id.currency_id", readonly=True,)
 
-    development_period = fields.Integer("Product Development Period (days)",)
-
+    design_period = fields.Integer(string="Design Period",)
     design_cost = fields.Monetary(string="Design Cost",)
 
     design_doc_period = fields.Integer(string="Documentation Design Period (days)",)
diff --git a/views/res_partner_contract_annex.xml b/views/res_partner_contract_annex.xml
index 48c76a3..9157dcb 100644
--- a/views/res_partner_contract_annex.xml
+++ b/views/res_partner_contract_annex.xml
@@ -21,6 +21,7 @@
                             <field name="date_conclusion"/>
                         </group>
                         <group name="design" string="Design">
+                            <field name="design_period"/>
                             <field name="design_cost"/>
                             <field name="design_doc_period"/>
                             <field name="design_doc_cost"/>