diff --git a/ext/custom-addons/dp_custom/models/product.py b/ext/custom-addons/dp_custom/models/product.py
index 05ea6a23..97ed9ada 100644
--- a/ext/custom-addons/dp_custom/models/product.py
+++ b/ext/custom-addons/dp_custom/models/product.py
@@ -62,9 +62,9 @@ class ProductTemplate(models.Model):
     @api.onchange('length', 'width', 'thickness')
     def _onchange_measures(self):
         if self.length>0 and self.width>0 and self.thickness>0:
-            self.volume = self.length*self.width*self.thickness/(1000*1000*1000)
+            self.volume = self.length*self.width*self.thickness / (1000*1000*1000)
         elif self.length>0 and self.width>0 and self.height>0:
-            self.volume = self.length*self.width*self.height/(1000*1000*1000)
+            self.volume = self.length*self.width*self.height / (1000*1000*1000)
 
     @api.model
     def create_product(self, vals):