diff --git a/utils/robots_perso.py b/utils/robots_perso.py
index 32a5e4f8..1f8212d7 100755
--- a/utils/robots_perso.py
+++ b/utils/robots_perso.py
@@ -11,7 +11,7 @@ robots_file = '/usr/scripts/var/perso/robots.txt'
 
 robots = collections.defaultdict(lambda:collections.defaultdict(list))
 def add_robots(user, robots):
-    robots_path = os.expanduser('~%s/www/robots.txt' % user)
+    robots_path = os.path.expanduser('~%s/www/robots.txt' % user)
     if os.path.exists(robots_path):
         rp = robotparser.RobotFileParser()
         rp.parse(open(robots_path))