diff --git a/src/RouteFetcher.php b/src/RouteFetcher.php
index 4ebc7f6..bb4f4a9 100644
--- a/src/RouteFetcher.php
+++ b/src/RouteFetcher.php
@@ -46,16 +46,23 @@ class RouteFetcher {
         $this->folderList = $list;
     }
 
-    public function scan() : Generator
+    public function scan(? array $folders = null) : Generator
     {
-        foreach($this->folderList as $namespace => $folder) {
+        foreach($folders ?: $this->folderList as $namespace => $folder) {
             if ( ! file_exists($folder) ) {
                 throw new RuntimeException(sprintf("Folder `%s` can not be found or scanned", $folder));
             }
 
             foreach (new DirectoryIterator($folder) as $fileinfo) {
                 if ( ! $fileinfo->isDot() ) {
-                    yield $namespace => $fileinfo;
+                    if ( $fileinfo->isDir() ) {
+                        foreach($this->scan([ "{$namespace}\\" . $fileinfo->getBasename() => $fileinfo->getPathname() ]) as $ns2 => $fi2) {
+                            yield $ns2 => $fi2;
+                        }
+                    }
+                    else {
+                        yield $namespace => $fileinfo;
+                    }
                 }
             }
         }
@@ -64,6 +71,10 @@ class RouteFetcher {
     public function compile() : Generator
     {
         foreach($this->scan() as $namespace => $file) {
+            if (  $file->getExtension() !== "php" ) {
+                continue;
+            }
+
             $base = "";
             $class = $this->generateClassname($file->getBasename(".php"), $namespace);
             $methods = $this->defaultMethods;
@@ -80,6 +91,7 @@ class RouteFetcher {
             }
 
             $routeList = $objectResolver->getAnnotationListFromClassname( $this->annotations['method'] );
+
             foreach($routeList as $func => $routes) {
                 foreach($routes as $route) {
                     $route->base = $base;