diff --git a/ihatemoney/models.py b/ihatemoney/models.py
index da7c5cf8..7cc12003 100644
--- a/ihatemoney/models.py
+++ b/ihatemoney/models.py
@@ -377,10 +377,11 @@ class Bill(db.Model):
     def pay_each(self):
         """Compute what each share has to pay"""
         if self.owers:
-            weights = (db.session.query(func.sum(Person.weight))
-                       .join(billowers, Bill)
-                       .filter(Bill.id == self.id))\
-                .scalar()            
+            weights = (
+                db.session.query(func.sum(Person.weight))
+                .join(billowers, Bill)
+                .filter(Bill.id == self.id)
+            ).scalar()
             return self.amount / weights
         else:
             return 0