diff --git a/UI/Scheduler/UIxAppointmentEditor.h b/UI/Scheduler/UIxAppointmentEditor.h
index 0dfd226ce..daf7f583a 100644
--- a/UI/Scheduler/UIxAppointmentEditor.h
+++ b/UI/Scheduler/UIxAppointmentEditor.h
@@ -50,7 +50,7 @@
 - (void) setIsTransparent: (BOOL) newIsOpaque;
 - (BOOL) isTransparent;
 
-- (void) setAptStartDate: (NSCalendarDate *) newAptEndDate;
+- (void) setAptStartDate: (NSCalendarDate *) newAptStartDate;
 - (NSCalendarDate *) aptStartDate;
 
 - (void) setAptEndDate: (NSCalendarDate *) newAptEndDate;