diff --git a/Libraries/Coordination/Kit/Sources/Routers/WindowRouter.swift b/Libraries/Coordination/Kit/Sources/Routers/WindowRouter.swift
index 21c7194..8376615 100644
--- a/Libraries/Coordination/Kit/Sources/Routers/WindowRouter.swift
+++ b/Libraries/Coordination/Kit/Sources/Routers/WindowRouter.swift
@@ -14,7 +14,7 @@ public class WindowRouter: Router {
     private let window: UIWindow?
     
     // MARK: Initialisers
-    public init(window: UIWindow?) {
+    public init(_ window: UIWindow?) {
         self.window = window
     }
     
@@ -22,7 +22,7 @@ public class WindowRouter: Router {
     public func present(
         _ viewController: UIViewController,
         animated: Bool,
-        onDismiss: OnDismissClosure?
+        onDismiss: OnDismissClosure? = nil
     ) {
         window?.rootViewController = viewController
         window?.makeKeyAndVisible()