diff --git a/account_statement_ext/statement.py b/account_statement_ext/statement.py
index e2c7cddd..a41038ea 100644
--- a/account_statement_ext/statement.py
+++ b/account_statement_ext/statement.py
@@ -210,9 +210,7 @@ class AccountBankSatement(Model):
         return super(AccountBankSatement, self).create(cr, uid, vals, context=context)
 
     def _get_period(self, cr, uid, date, context=None):
-        """
-        Find matching period for date, used in the statement line creation.
-        """
+        """Return matching period for a date."""
         if context is None:
             context = {}
         period_obj = self.pool.get('account.period')
@@ -575,9 +573,7 @@ class AccountBankSatementLine(Model):
     _inherit = "account.bank.statement.line"
 
     def _get_period(self, cr, uid, context=None):
-        """
-        Return a period from a given date in the context.
-        """
+        """Return matching period for a date."""
         if context is None:
             context = {}
         date = context.get('date')