diff --git a/system/Router/RouteCollection.php b/system/Router/RouteCollection.php
index 181229cba6dd..ed517ca40671 100644
--- a/system/Router/RouteCollection.php
+++ b/system/Router/RouteCollection.php
@@ -1622,8 +1622,17 @@ public function getRegisteredControllers(?string $verb = '*'): array
         $controllers = [];
 
         if ($verb === '*') {
-            foreach ($this->defaultHTTPMethods as $tmpVerb) {
-                foreach ($this->routes[$tmpVerb] as $route) {
+            // Routes added via `add()` or `map()` are stored in the `*` bucket,
+            // so it must be iterated as well.
+            $verbs = [...$this->defaultHTTPMethods, '*'];
+
+            foreach ($verbs as $tmpVerb) {
+                foreach ($this->routes[$tmpVerb] ?? [] as $routeKey => $route) {
+                    // A redirect has no controller to register.
+                    if (! isset($route['handler']) || $this->isRedirect($routeKey)) {
+                        continue;
+                    }
+
                     $controller = $this->getControllerName($route['handler']);
                     if ($controller !== null) {
                         $controllers[] = $controller;
diff --git a/tests/system/Router/RouteCollectionTest.php b/tests/system/Router/RouteCollectionTest.php
index d5a5dab8a9a3..0d902a11394d 100644
--- a/tests/system/Router/RouteCollectionTest.php
+++ b/tests/system/Router/RouteCollectionTest.php
@@ -2032,6 +2032,30 @@ public function testGetRegisteredControllersReturnsControllerByAddMethod(): void
         $this->assertSame($expects, $routes);
     }
 
+    public function testGetRegisteredControllersReturnsControllerByAddMethodWithWildcardVerb(): void
+    {
+        $collection = $this->getCollector();
+        $collection->get('test', '\App\Controllers\Hello::get');
+        $collection->add('hello', '\App\Controllers\Test::hello');
+        $collection->add('feed', static function (): void {
+        });
+        $collection->map([
+            'mapped'    => '\App\Controllers\Mapped::index',
+            'duplicate' => '\App\Controllers\Test::anotherMethod',
+        ]);
+        $collection->addRedirect('old-route', 'new-route');
+        $collection->get('from', 'to', ['redirect' => 301]);
+
+        $routes = $collection->getRegisteredControllers('*');
+
+        $expects = [
+            '\App\Controllers\Hello',
+            '\App\Controllers\Test',
+            '\App\Controllers\Mapped',
+        ];
+        $this->assertSame($expects, $routes);
+    }
+
     public function testGetRegisteredControllersDoesNotReturnClosures(): void
     {
         $collection = $this->getCollector();