diff --git a/tryton/config.py b/tryton/config.py
index 8f21014e60..72e4036e06 100644
--- a/tryton/config.py
+++ b/tryton/config.py
@@ -168,7 +168,7 @@ class ConfigManager(object):
 
 CONFIG = ConfigManager()
 CURRENT_DIR = os.path.abspath(os.path.normpath(os.path.join(
-    os.path.dirname(sys.argv[0]))))
+    os.path.dirname(__file__), '..')))
 PREFIX = os.path.abspath(os.path.normpath(os.path.join(
     os.path.dirname(sys.argv[0]), '..')))
 PIXMAPS_DIR = os.path.join(CURRENT_DIR, 'share', 'pixmaps')