diff --git a/UI/Scheduler/UIxCalView.m b/UI/Scheduler/UIxCalView.m
index c3fcd4094..0c42a3b95 100644
--- a/UI/Scheduler/UIxCalView.m
+++ b/UI/Scheduler/UIxCalView.m
@@ -401,7 +401,7 @@ static BOOL shouldDisplayWeekend = NO;
 
 - (unsigned) dayEndHour
 {
-  return 24;
+  return 23;
 }
 
 - (BOOL) shouldDisplayWeekend