diff --git a/addons/crm/tests/test_crm_lead_convert.py b/addons/crm/tests/test_crm_lead_convert.py
index 48502f57154..d20a616d47f 100644
--- a/addons/crm/tests/test_crm_lead_convert.py
+++ b/addons/crm/tests/test_crm_lead_convert.py
@@ -29,6 +29,32 @@ class TestLeadConvertForm(crm_common.TestLeadConvertCommon):
         self.assertEqual(wizard.action, 'exist')
         self.assertEqual(wizard.partner_id, customer)
 
+    @users('user_sales_manager')
+    def test_form_name_onchange(self):
+        """ Test Lead._find_matching_partner() """
+        lead = self.env['crm.lead'].browse(self.lead_1.ids)
+        lead_dup = lead.copy({'name': 'Duplicate'})
+        customer = self.env['res.partner'].create({
+            "name": "Amy Wong",
+            "email": '"Amy, PhD Student, Wong" Tiny <AMY.WONG@test.example.com>'
+        })
+
+        wizard = Form(self.env['crm.lead2opportunity.partner'].with_context({
+            'active_model': 'crm.lead',
+            'active_id': lead.id,
+            'active_ids': lead.ids,
+        }))
+
+        self.assertEqual(wizard.name, 'merge')
+        self.assertEqual(wizard.action, 'exist')
+        self.assertEqual(wizard.partner_id, customer)
+        self.assertEqual(wizard.duplicated_lead_ids[:], lead + lead_dup)
+
+        wizard.name = 'convert'
+        wizard.action = 'create'
+        self.assertEqual(wizard.action, 'create', 'Should keep user input')
+        self.assertEqual(wizard.name, 'convert', 'Should keep user input')
+
 
 @tagged('lead_manage')
 class TestLeadConvert(crm_common.TestLeadConvertCommon):
diff --git a/addons/crm/wizard/crm_lead_to_opportunity.py b/addons/crm/wizard/crm_lead_to_opportunity.py
index 72d0e236f64..b24314c75af 100644
--- a/addons/crm/wizard/crm_lead_to_opportunity.py
+++ b/addons/crm/wizard/crm_lead_to_opportunity.py
@@ -50,7 +50,8 @@ class Lead2OpportunityPartner(models.TransientModel):
     @api.depends('duplicated_lead_ids')
     def _compute_name(self):
         for convert in self:
-            convert.name = 'merge' if convert.duplicated_lead_ids and len(convert.duplicated_lead_ids) >= 2 else 'convert'
+            if not convert.name:
+                convert.name = 'merge' if convert.duplicated_lead_ids and len(convert.duplicated_lead_ids) >= 2 else 'convert'
 
     @api.depends('lead_id')
     def _compute_action(self):