diff --git a/invoice.py b/invoice.py
index 5046be2..242dd76 100644
--- a/invoice.py
+++ b/invoice.py
@@ -392,12 +392,6 @@ class Invoice(metaclass=PoolMeta):
                         invoice=self.rec_name))
 
         return {
-                'invoice': self,
-                'Decimal': Decimal,
-                'Currency': Currency,
-                'euro': euro,
-                'exchange_rate': exchange_rate,
-                'exchange_rate_date': exchange_rate_date,
                 'invoice': self,
                 'Decimal': Decimal,
                 'Currency': Currency,