diff --git a/addons/crm/data/crm_lead_prediction_data.xml b/addons/crm/data/crm_lead_prediction_data.xml
index 42a2e8e34d9..a437956d0fc 100644
--- a/addons/crm/data/crm_lead_prediction_data.xml
+++ b/addons/crm/data/crm_lead_prediction_data.xml
@@ -26,7 +26,7 @@
         </record>
         <record id="crm_pls_start_date_param" model="ir.config_parameter">
             <field name="key">crm.pls_start_date</field>
-            <field name="value" eval="DateTime.now().strftime('%Y-%m-%d')"/>
+            <field name="value" eval="(datetime.now() - timedelta(days=8)).strftime('%Y-%m-%d')"/>
         </record>
     </data>
 
diff --git a/addons/crm/models/crm_lead.py b/addons/crm/models/crm_lead.py
index e57d4a771f7..bdb39032b89 100644
--- a/addons/crm/models/crm_lead.py
+++ b/addons/crm/models/crm_lead.py
@@ -105,7 +105,7 @@ class Lead(models.Model):
     date_conversion = fields.Datetime('Conversion Date', readonly=True)
 
     # Probability - Only used for type opportunity
-    probability = fields.Float('Probability', group_operator="avg", default=10.0)
+    probability = fields.Float('Probability', group_operator="avg")
     automated_probability = fields.Float('Automated Probability', readonly=True)
     is_automated_probability = fields.Boolean('Is automated probability?', compute="_compute_is_automated_probability")
     phone_state = fields.Selection([
@@ -1426,9 +1426,11 @@ class Lead(models.Model):
 
         # Recompute all the leads. Won : probability = 100 | Lost : probability = 0 or inactive
         # Here, inactive won't be returned anyway
+        # Get also all the lead without probability --> These are the new leads. Activate auto probability on them.
         pls_start_date = self._pls_get_safe_start_date()
         if pls_start_date:
-            pending_lead_domain = [('probability', '<', 100), ('probability', '>', 0), ('create_date', '>', pls_start_date)]
+            pending_lead_domain = ['&', ('create_date', '>', pls_start_date),
+                                   '|', ('probability', '=', False), '&', ('probability', '<', 100), ('probability', '>', 0)]
             leads_to_update = self.env['crm.lead'].search(pending_lead_domain)
             lead_probabilities = leads_to_update._pls_get_naive_bayes_probabilities(batch_mode=True)
 
@@ -1598,7 +1600,7 @@ class Lead(models.Model):
             self.flush(['probability'])
             query = """SELECT id, %s
                         FROM crm_lead l
-                        WHERE probability > 0 AND probability < 100 AND active = True AND id in %%s order by team_id asc"""
+                        WHERE ((probability > 0 AND probability < 100) OR probability is null) AND active = True AND id in %%s order by team_id asc"""
             query = sql.SQL(query % str_fields).format(*args)
 
             self._cr.execute(query, [tuple(self.ids)])
@@ -1608,7 +1610,7 @@ class Lead(models.Model):
                         FROM crm_lead l
                         LEFT JOIN crm_lead_tag_rel rel ON l.id = rel.lead_id
                         LEFT JOIN crm_lead_tag t ON rel.tag_id = t.id
-                        WHERE l.probability > 0 AND l.probability < 100 AND l.active = True AND l.id in %s order by l.team_id asc"""
+                        WHERE ((l.probability > 0 AND l.probability < 100) OR l.probability is null) AND l.active = True AND l.id in %s order by l.team_id asc"""
             self._cr.execute(query, [tuple(self.ids)])
             tag_results = self._cr.dictfetchall()