diff --git a/Basemap Tutorial/swift/MyFirstMapApp/ViewController.swift b/Basemap Tutorial/swift/MyFirstMapApp/ViewController.swift
index 5c76054..08bc741 100644
--- a/Basemap Tutorial/swift/MyFirstMapApp/ViewController.swift	
+++ b/Basemap Tutorial/swift/MyFirstMapApp/ViewController.swift	
@@ -57,7 +57,7 @@ class ViewController: UIViewController, AGSMapViewLayerDelegate {
     
     @IBAction func basemapChanged(sender: UISegmentedControl) {
         
-        var basemapURL:NSURL
+        var basemapURL:NSURL!
         
         switch sender.selectedSegmentIndex {
             case 0:  //gray