diff --git a/addons/stock/models/stock_move.py b/addons/stock/models/stock_move.py
index b62a86d2452..b2b3501f61b 100644
--- a/addons/stock/models/stock_move.py
+++ b/addons/stock/models/stock_move.py
@@ -957,13 +957,15 @@ Please change the quantity done or the rounding precision of your unit of measur
         fields = [
             'product_id', 'price_unit', 'procure_method', 'location_id', 'location_dest_id',
             'product_uom', 'restrict_partner_id', 'scrapped', 'origin_returned_move_id',
-            'package_level_id', 'propagate_cancel', 'description_picking', 'date_deadline',
+            'package_level_id', 'propagate_cancel', 'description_picking',
             'product_packaging_id',
         ]
         if self.env['ir.config_parameter'].sudo().get_param('stock.merge_only_same_date'):
             fields.append('date')
         if self.env.context.get('merge_extra'):
             fields.pop(fields.index('procure_method'))
+        if not self.env['ir.config_parameter'].sudo().get_param('stock.merge_ignore_date_deadline'):
+            fields.append('date_deadline')
         return fields
 
     @api.model