diff --git a/05-router.md b/05-router.md
index a381107..d635a58 100644
--- a/05-router.md
+++ b/05-router.md
@@ -74,6 +74,6 @@ $routeDefinitionCallback = function (\FastRoute\RouteCollector $r) {
 $dispatcher = \FastRoute\simpleDispatcher($routeDefinitionCallback);
 ```
 
-This is already an improvement, but now all the handler code is in the `Routers.php` file. This is not optimal, so let's fix that in the next part.
+This is already an improvement, but now all the handler code is in the `Routes.php` file. This is not optimal, so let's fix that in the next part.
 
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