diff --git a/helpdesk/lib.py b/helpdesk/lib.py
index bd8c4a42..96bb430f 100644
--- a/helpdesk/lib.py
+++ b/helpdesk/lib.py
@@ -220,7 +220,7 @@ def daily_time_spent_calculation(earliest, latest, open_hours):
     latest_f = latest.hour + latest.minute / 60 + latest.second / (60 * 60) + latest.microsecond / (60 * 60 * 999999)
 
     # if latest time is midnight and close hour is midnight, add a second to the time spent
-    if latest_f >= 24 and end == MIDNIGHT:
+    if latest_f >= MIDNIGHT and end == MIDNIGHT:
         time_spent_seconds += 1
     
     if earliest_f < start: