diff --git a/Sources/Classes/ImageView.swift b/Sources/Classes/ImageView.swift
index 053d366..aa327f4 100644
--- a/Sources/Classes/ImageView.swift
+++ b/Sources/Classes/ImageView.swift
@@ -106,24 +106,22 @@ class ImageView: UIView {
     private func layoutScrollView() {
         
         scrollView.translatesAutoresizingMaskIntoConstraints = false
-        let constraints = [
+        [
             scrollView.topAnchor.constraint(equalTo: topAnchor, constant: 0.0),
             scrollView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: 0.0),
             scrollView.rightAnchor.constraint(equalTo: rightAnchor, constant: 0.0),
             scrollView.leftAnchor.constraint(equalTo: leftAnchor, constant: 0.0),
-            ].map { $0.isActive = true }
+            ].forEach { $0.isActive = true }
     }
     
     private func layoutProgressView() {
-
         progressView.translatesAutoresizingMaskIntoConstraints = false
-        
-        let constraints = [
+        [
             progressView.heightAnchor.constraint(equalToConstant: 40.0),
             progressView.widthAnchor.constraint(equalToConstant: 40.0),
             progressView.centerXAnchor.constraint(lessThanOrEqualTo: centerXAnchor, constant: 1.0),
             progressView.centerYAnchor.constraint(lessThanOrEqualTo: centerYAnchor, constant: 1.0),
-            ].map { $0.isActive = true }
+            ].forEach { $0.isActive = true }
      }
     
     func loadImage(imageURL: URL) {
diff --git a/Sources/Classes/ViewController.swift b/Sources/Classes/ViewController.swift
index f8bcea8..0a1a4a1 100644
--- a/Sources/Classes/ViewController.swift
+++ b/Sources/Classes/ViewController.swift
@@ -231,41 +231,41 @@ fileprivate extension ViewController {
 
     func layoutScrollView() {
         scrollView.translatesAutoresizingMaskIntoConstraints = false
-        let constraints = [
+        [
             scrollView.topAnchor.constraint(equalTo: view.topAnchor, constant: 0.0),
             scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0.0),
             scrollView.rightAnchor.constraint(equalTo: view.rightAnchor, constant: 0.0),
             scrollView.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 0.0),
-            ].map { $0.isActive = true }
+            ].forEach { $0.isActive = true }
     }
 
     func layoutCloseButton() {
         closeButton.translatesAutoresizingMaskIntoConstraints = false
-        let constraints = [
+        [
             closeButton.topAnchor.constraint(equalTo: view.topAnchor, constant: 0.0),
             closeButton.rightAnchor.constraint(equalTo: view.rightAnchor, constant: 0.0),
             closeButton.heightAnchor.constraint(equalToConstant: 52.0),
             closeButton.widthAnchor.constraint(equalToConstant: 52.0),
-            ].map { $0.isActive = true }
+            ].forEach { $0.isActive = true }
     }
 
     func layoutPageControl() {
         pageControl.translatesAutoresizingMaskIntoConstraints = false
-        let constraints = [
+        [
             pageControl.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0.0),
             pageControl.centerXAnchor.constraint(equalTo: view.centerXAnchor),
             pageControl.rightAnchor.constraint(equalTo: view.rightAnchor, constant: 0.0),
             pageControl.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 0.0),
-            ].map { $0.isActive = true }
+            ].forEach { $0.isActive = true }
     }
 
     func layoutCaptionLabel() {
         captionLabel.translatesAutoresizingMaskIntoConstraints = false
-        let constraints = [
+        [
             captionLabel.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -32.0),
             captionLabel.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -16.0),
             captionLabel.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 16.0),
-            ].map { $0.isActive = true }
+            ].forEach { $0.isActive = true }
     }
 
 }