diff --git a/AltoRouter.php b/AltoRouter.php
index fa9e451..d8ff998 100644
--- a/AltoRouter.php
+++ b/AltoRouter.php
@@ -49,13 +49,13 @@ class AltoRouter
      * @param array $matchTypes
      * @throws Exception
      */
-    public function __construct(array $routes = [], $basePath = '', $matchTypes = [])
+    public function __construct(array $routes = [], $basePath = '', array $matchTypes = [])
     {
         $this->addRoutes($routes);
         $this->setBasePath($basePath);
         $this->addMatchTypes($matchTypes);
     }
-    
+
     /**
      * Retrieves all routes.
      * Useful if you want to process or display routes.
@@ -152,7 +152,7 @@ public function generate($routeName, array $params = [])
 
         // Replace named parameters
         $route = $this->namedRoutes[$routeName];
-        
+
         // prepend base path to route url again
         $url = $this->basePath . $route;
 
@@ -277,7 +277,7 @@ protected function compileRoute($route)
                 }
 
                 $optional = $optional !== '' ? '?' : null;
-                
+
                 //Older versions of PCRE require the 'P' in (?P<named>)
                 $pattern = '(?:'
                         . ($pre !== '' ? $pre : null)