diff --git a/i3pystatus/pomodoro.py b/i3pystatus/pomodoro.py
index 1160561..42993d0 100644
--- a/i3pystatus/pomodoro.py
+++ b/i3pystatus/pomodoro.py
@@ -27,7 +27,8 @@ class Pomodoro(IntervalModule):
         ('break_duration', 'Short break duration in secods'),
         ('long_break_duration', 'Long break duration in secods'),
         ('short_break_count', 'Short break count before first long break'),
-        format
+        ('format', 'format string, available formatters: current_pomodoro, '
+                   'total_pomodoro, time')
     )
 
     color_stopped = '#2ECCFA'