diff --git a/Sources/ButtonBarView.swift b/Sources/ButtonBarView.swift
index 9f63c0a..eacc0b1 100644
--- a/Sources/ButtonBarView.swift
+++ b/Sources/ButtonBarView.swift
@@ -47,7 +47,7 @@ open class ButtonBarView: UICollectionView {
     
     internal var selectedBarHeight: CGFloat = 4 {
         didSet {
-            updateSlectedBarYPosition()
+            updateSelectedBarYPosition()
         }
     }
     var selectedBarAlignment: SelectedBarAlignment = .center
@@ -63,6 +63,11 @@ open class ButtonBarView: UICollectionView {
         addSubview(selectedBar)
     }
     
+    override open func layoutSubviews() {
+        super.layoutSubviews()
+        updateSelectedBarYPosition()
+    }
+    
     open func moveTo(index: Int, animated: Bool, swipeDirection: SwipeDirection, pagerScroll: PagerScroll) {
         selectedIndex = index
         updateSelectedBarPosition(animated, swipeDirection: swipeDirection, pagerScroll: pagerScroll)
@@ -165,7 +170,7 @@ open class ButtonBarView: UICollectionView {
         return contentOffset
     }
     
-    private func updateSlectedBarYPosition() {
+    private func updateSelectedBarYPosition() {
         var selectedBarFrame = selectedBar.frame
         selectedBarFrame.origin.y = frame.size.height - selectedBarHeight
         selectedBarFrame.size.height = selectedBarHeight