diff --git a/addons/account_asset/account_asset.py b/addons/account_asset/account_asset.py
index e7c6905ed1d..bce788afb93 100644
--- a/addons/account_asset/account_asset.py
+++ b/addons/account_asset/account_asset.py
@@ -161,6 +161,7 @@ class account_asset_asset(osv.osv):
                 amount = self._compute_board_amount(cr, uid, asset, i, residual_amount, amount_to_depr, undone_dotation_number, posted_depreciation_line_ids, total_days, depreciation_date, context=context)
                 company_currency = asset.company_id.currency_id.id
                 current_currency = asset.currency_id.id
+                # compute amount into company currency
                 amount = currency_obj.compute(cr, uid, current_currency, company_currency, amount, context=context)
                 residual_amount -= amount
                 vals = {