diff --git a/addons/l10n_fr_fec/wizard/fec.py b/addons/l10n_fr_fec/wizard/fec.py
index 3acc2e7e644..cb6eabd3b89 100644
--- a/addons/l10n_fr_fec/wizard/fec.py
+++ b/addons/l10n_fr_fec/wizard/fec.py
@@ -184,11 +184,11 @@ class AccountFrFec(models.TransientModel):
                     unaffected_earnings_amount = float(unaffected_earnings_results[11].replace(',', '.')) - float(unaffected_earnings_results[12].replace(',', '.'))
                     listrow_amount = current_amount + unaffected_earnings_amount
                     if listrow_amount > 0:
-                        listrow[11] = str(listrow_amount)
-                        listrow[12] = '0.00'
+                        listrow[11] = str(listrow_amount).replace('.', ',')
+                        listrow[12] = '0,00'
                     else:
-                        listrow[11] = '0.00'
-                        listrow[12] = str(listrow_amount)
+                        listrow[11] = '0,00'
+                        listrow[12] = str(-listrow_amount).replace('.', ',')
             w.writerow([s.encode("utf-8") for s in listrow])
         #if the unaffected earnings account wasn't in the selection yet: add it manually
         if not unaffected_earnings_line and unaffected_earnings_results and unaffected_earnings_results[11] != '0,00' and unaffected_earnings_results[12] != '0,00':