diff --git a/.config/i3pystatus/ice-status.py b/.config/i3pystatus/ice-status.py
index 8e77810..c1a79ca 100755
--- a/.config/i3pystatus/ice-status.py
+++ b/.config/i3pystatus/ice-status.py
@@ -8,6 +8,8 @@ from sys import exit
 
 # bundlewrap.utils.text.format_duration, but trimmed down
 def format_time(seconds):
+    if seconds is None:
+        return "?"
     components = []
     if seconds >= 3600:
         hours = int(seconds / 3600)