diff --git a/forecast.py b/forecast.py
index aca5ce4039..8afa300455 100644
--- a/forecast.py
+++ b/forecast.py
@@ -260,7 +260,7 @@ class ForecastLine(ModelSQL, ModelView):
                  'quantity': qty * line.minimal_quantity,
                  'planned_date': line.forecast.from_date + datetime.timedelta(day),
                  'company': line.forecast.company.id,
-                 'currency':line.forecast.company.currency,
+                 'currency':line.forecast.company.currency.id,
                  'unit_price': unit_price,
                  },
                 context=context)