diff --git a/src/LogController.php b/src/LogController.php
index 8265ff7..3f6e925 100644
--- a/src/LogController.php
+++ b/src/LogController.php
@@ -9,7 +9,7 @@
 
 class LogController extends Controller
 {
-    public function index($file, Request $request)
+    public function index($file = null, Request $request)
     {
         if ($file === null) {
             $file = (new LogViewer())->getLastModifiedLog();