diff --git a/PDTSimpleCalendar/PDTSimpleCalendarViewController.m b/PDTSimpleCalendar/PDTSimpleCalendarViewController.m
index 1ff0e10..658e711 100644
--- a/PDTSimpleCalendar/PDTSimpleCalendarViewController.m
+++ b/PDTSimpleCalendar/PDTSimpleCalendarViewController.m
@@ -347,7 +347,10 @@ - (NSCalendarUnit)weekCalendarUnitDependingOniOSVersion {
     if ([self.calendar respondsToSelector:@selector(isDateInToday:)]) {
         return NSCalendarUnitWeekOfMonth;
     } else {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
         return NSWeekCalendarUnit;
+#pragma clang diagnostic pop
     }
 }