diff --git a/weboob/tools/capabilities/bank/transactions.py b/weboob/tools/capabilities/bank/transactions.py
index b008b5c2..18ab59e3 100644
--- a/weboob/tools/capabilities/bank/transactions.py
+++ b/weboob/tools/capabilities/bank/transactions.py
@@ -66,6 +66,7 @@ class FrenchTransaction(Transaction):
         else:
             self.amount = Decimal('0')
 
+    @classmethod
     def parse_date(self, date):
         if date is None:
             return NotAvailable
@@ -74,7 +75,7 @@ class FrenchTransaction(Transaction):
             if date.isdigit() and len(date) == 8:
                 date = datetime.date(int(date[4:8]), int(date[2:4]), int(date[0:2]))
             elif '/' in date:
-                date = datetime.date(*reversed([int(x) for x in date.split('/')]))
+                date = datetime.date(*reversed(map(int, date.split('/'))))
         if not isinstance(date, (datetime.date, datetime.datetime)):
             self._logger.warning('Unable to parse date %r' % date)
             date = NotAvailable