diff --git a/addons/account/models/account.py b/addons/account/models/account.py
index ef611962da9..6ceb5ba19b1 100644
--- a/addons/account/models/account.py
+++ b/addons/account/models/account.py
@@ -167,6 +167,12 @@ class AccountAccount(models.Model):
             move_lines = self.env['account.move.line'].search([('account_id', 'in', self.ids)], limit=1)
             if len(move_lines):
                 raise UserError(_('You cannot change the value of the reconciliation on this account as it already has some moves'))
+
+        if vals.get('currency_id'):
+            for account in self:
+                if self.env['account.move.line'].search_count([('account_id', '=', account.id), ('currency_id', 'not in', (False, vals['currency_id']))]):
+                    raise UserError(_('You cannot set a currency on this account as it already has some journal entries having a different foreign currency.'))
+
         return super(AccountAccount, self).write(vals)
 
     @api.multi