diff --git a/system/Router/Router.php b/system/Router/Router.php
index 1993c60aba30..d79dcb845995 100644
--- a/system/Router/Router.php
+++ b/system/Router/Router.php
@@ -15,7 +15,6 @@
 use CodeIgniter\Exceptions\PageNotFoundException;
 use CodeIgniter\HTTP\Request;
 use CodeIgniter\Router\Exceptions\RedirectException;
-use CodeIgniter\Router\Exceptions\RouterException;
 
 /**
  * Request router.
@@ -459,15 +458,12 @@ public function autoRoute(string $uri)
     {
         $segments = explode('/', $uri);
 
+        // WARNING: Directories get shifted out of the segments array.
         $segments = $this->scanControllers($segments);
 
-        // If we don't have any segments left - try the default controller;
-        // WARNING: Directories get shifted out of the segments array.
-        if (empty($segments)) {
-            $this->setDefaultController();
-        }
+        // If we don't have any segments left - use the default controller;
         // If not empty, then the first segment should be the controller
-        else {
+        if (! empty($segments)) {
             $this->controller = ucfirst(array_shift($segments));
         }
 
@@ -643,8 +639,6 @@ protected function setRequest(array $segments = [])
     {
         // If we don't have any segments - try the default controller;
         if (empty($segments)) {
-            $this->setDefaultController();
-
             return;
         }
 
@@ -662,24 +656,4 @@ protected function setRequest(array $segments = [])
 
         $this->params = $segments;
     }
-
-    /**
-     * Sets the default controller based on the info set in the RouteCollection.
-     */
-    protected function setDefaultController()
-    {
-        if (empty($this->controller)) {
-            throw RouterException::forMissingDefaultRoute();
-        }
-
-        sscanf($this->controller, '%[^/]/%s', $class, $this->method);
-
-        if (! is_file(APPPATH . 'Controllers/' . $this->directory . ucfirst($class) . '.php')) {
-            return;
-        }
-
-        $this->controller = ucfirst($class);
-
-        log_message('info', 'Used the default controller.');
-    }
 }