diff --git a/system/Router/RouteCollection.php b/system/Router/RouteCollection.php
index e0814b76d1d4..9c5403b152dc 100644
--- a/system/Router/RouteCollection.php
+++ b/system/Router/RouteCollection.php
@@ -1656,7 +1656,7 @@ public function getRegisteredControllers(?string $verb = '*'): array
 
         if ($verb === '*') {
             foreach ($this->defaultHTTPMethods as $tmpVerb) {
-                foreach ($this->routes[$tmpVerb] as $routeKey => $route) {
+                foreach ($this->routes[$tmpVerb] as $route) {
                     $controller = $this->getControllerName($route['handler']);
                     if ($controller !== null) {
                         $controllers[] = $controller;