diff --git a/user.py b/user.py

index cebe2ea..12ad553 100644

--- a/user.py

+++ b/user.py

@@ -108,9 +108,9 @@ def user_actions(session):

         return 59, 'Bad request'

     action = found[1]

     post_id = found[3]

- u_name = urlparse.unquote(found[4])

- u_sub = urlparse.unquote(found[5])

- s_sub = urlparse.unquote(found[6])

+ u_name = urlparse.unquote(found[4]) if found[4] else None

+ u_sub = urlparse.unquote(found[5]) if found[5] else None

+ s_sub = urlparse.unquote(found[6]) if found[6] else None

     is_follow = action in ('follow', 'unfollow')

     if u_name != None:

         target_type = FOLLOW_USER if is_follow else MUTE_USER