diff --git a/Sources/PagerTabStripViewController.swift b/Sources/PagerTabStripViewController.swift
index 01ae69d9..6ae787fe 100644
--- a/Sources/PagerTabStripViewController.swift
+++ b/Sources/PagerTabStripViewController.swift
@@ -271,10 +271,10 @@ open class PagerTabStripViewController: UIViewController, UIScrollViewDelegate {
         preCurrentIndex = currentIndex
         let changeCurrentIndex = newCurrentIndex != oldCurrentIndex
 
-        if let progressiveDeledate = self as? PagerTabStripIsProgressiveDelegate, pagerBehaviour.isProgressiveIndicator {
+        if let progressiveDelegate = self as? PagerTabStripIsProgressiveDelegate, pagerBehaviour.isProgressiveIndicator {
 
             let (fromIndex, toIndex, scrollPercentage) = progressiveIndicatorData(virtualPage)
-            progressiveDeledate.updateIndicator(for: self, fromIndex: fromIndex, toIndex: toIndex, withProgressPercentage: scrollPercentage, indexWasChanged: changeCurrentIndex)
+            progressiveDelegate.updateIndicator(for: self, fromIndex: fromIndex, toIndex: toIndex, withProgressPercentage: scrollPercentage, indexWasChanged: changeCurrentIndex)
         } else {
             delegate?.updateIndicator(for: self, fromIndex: min(oldCurrentIndex, pagerViewControllers.count - 1), toIndex: newCurrentIndex)
         }