diff --git a/account_move_template/account_document_template.py b/account_move_template/account_document_template.py
index 48c3cb04..3b69ce09 100644
--- a/account_move_template/account_document_template.py
+++ b/account_move_template/account_document_template.py
@@ -21,6 +21,7 @@
 ##############################################################################
 
 from openerp import models, fields, api, exceptions, _
+from openerp.tools.safe_eval import safe_eval as eval
 from functools import partial
 import re
 
@@ -66,7 +67,8 @@ class AccountDocumentTemplate(models.Model):
         try:
             recurse_lines = partial(self.lines, computed_lines=computed_lines)
             computed_lines[line_number] = eval(
-                line.python_code.replace('L', 'recurse_lines')
+                line.python_code.replace('L', 'recurse_lines'),
+                locals_dict={'recurse_lines': recurse_lines}
             )
         except KeyError:
             raise exceptions.Warning(