diff --git a/addons/account/account.py b/addons/account/account.py
index 8a2cbdb8451..3abbe4cef2e 100644
--- a/addons/account/account.py
+++ b/addons/account/account.py
@@ -301,11 +301,10 @@ class account_account(osv.osv):
                 for fn in field_names:
                     sums.setdefault(current.id, {})[fn] = accounts.get(current.id, {}).get(fn, 0.0)
                     for child in current.child_id:
-                        if sums.get(child.id, False):
-                            if child.company_id.currency_id.id == current.company_id.currency_id.id:
-                                sums[current.id][fn] += sums[child.id][fn]
-                            else:
-                                sums[current.id][fn] += currency_obj.compute(cr, uid, child.company_id.currency_id.id, current.company_id.currency_id.id, sums[child.id][fn], context=context)
+                        if child.company_id.currency_id.id == current.company_id.currency_id.id:
+                            sums[current.id][fn] += sums[child.id][fn]
+                        else:
+                            sums[current.id][fn] += currency_obj.compute(cr, uid, child.company_id.currency_id.id, current.company_id.currency_id.id, sums[child.id][fn], context=context)
             res = {}
             null_result = dict((fn, 0.0) for fn in field_names)
             for id in ids: