diff --git a/addons/account/account.py b/addons/account/account.py
index 2e5eef9add0..3cee11f5c2b 100644
--- a/addons/account/account.py
+++ b/addons/account/account.py
@@ -2836,8 +2836,8 @@ class account_tax_template(osv.osv):
 
         'ref_base_code_id': fields.many2one('account.tax.code.template', 'Refund Base Code', help="Use this code for the tax declaration."),
         'ref_tax_code_id': fields.many2one('account.tax.code.template', 'Refund Tax Code', help="Use this code for the tax declaration."),
-        'ref_base_sign': fields.float('Base Sign Code', help="Usually 1 or -1."),
-        'ref_tax_sign': fields.float('Tax Sign Code', help="Usually 1 or -1."),
+        'ref_base_sign': fields.float('Refund Base Code Sign', help="Usually 1 or -1."),
+        'ref_tax_sign': fields.float('Refund Tax Code Sign', help="Usually 1 or -1."),
         'include_base_amount': fields.boolean('Include in Base Amount', help="Set if the amount of tax must be included in the base amount before computing the next taxes."),
         'description': fields.char('Internal Name'),
         'type_tax_use': fields.selection([('sale','Sale'),('purchase','Purchase'),('all','All')], 'Tax Use In', required=True,),