diff --git a/setup.py b/setup.py
index 21a820d99b..3aa56a3611 100644
--- a/setup.py
+++ b/setup.py
@@ -64,6 +64,7 @@ setup(name='trytond_timesheet',
         'Natural Language :: French',
         'Natural Language :: German',
         'Natural Language :: Russian',
+        'Natural Language :: Slovenian',
         'Natural Language :: Spanish',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 2.6',