diff --git a/odoo/modules/migration.py b/odoo/modules/migration.py
index 552c9d8dae7..7f86b73a0da 100644
--- a/odoo/modules/migration.py
+++ b/odoo/modules/migration.py
@@ -116,7 +116,8 @@ class MigrationManager(object):
             lst.sort()
             return lst
 
-        parsed_installed_version = parse_version(getattr(pkg, 'load_version', pkg.installed_version) or '')
+        installed_version = getattr(pkg, 'load_version', pkg.installed_version) or ''
+        parsed_installed_version = parse_version(installed_version)
         current_version = parse_version(convert_version(pkg.data['version']))
 
         versions = _get_migration_versions(pkg)
@@ -153,7 +154,7 @@ class MigrationManager(object):
                         except AttributeError:
                             _logger.error('module %(addon)s: Each %(stage)s-migration file must have a "migrate(cr, installed_version)" function' % strfmt)
                         else:
-                            migrate(self.cr, pkg.installed_version)
+                            migrate(self.cr, installed_version)
                     finally:
                         if fp:
                             fp.close()