diff --git a/FSCalendar/FSCalendar.m b/FSCalendar/FSCalendar.m
index c732c10..b40333b 100644
--- a/FSCalendar/FSCalendar.m
+++ b/FSCalendar/FSCalendar.m
@@ -774,6 +774,7 @@ typedef NS_ENUM(NSUInteger, FSCalendarOrientation) {
                     [_header reloadData];
                 }
                 _needsAdjustingMonthPosition = YES;
+                _needsAdjustingViewFrame = YES;
                 [self setNeedsLayout];
                 _supressEvent = NO;
                 break;