diff --git a/AltoRouter.php b/AltoRouter.php
index 7e3acac..ee0759b 100644
--- a/AltoRouter.php
+++ b/AltoRouter.php
@@ -5,15 +5,26 @@ class AltoRouter {
 	protected $routes = array();
 	protected $namedRoutes = array();
 	protected $basePath = '';
+	protected $matchTypes = array(
+		'i'  => '[0-9]++',
+		'a'  => '[0-9A-Za-z]++',
+		'h'  => '[0-9A-Fa-f]++',
+		'*'  => '.+?',
+		'**' => '.++',
+		''   => '[^/\.]++'
+	);
 
 	/**
 	  * Create router in one call from config.
 	  *
 	  * @param array $routes
 	  * @param string $basePath
+	  * @param array $matchTypes
 	  */
-	public function __construct( $routes = array(), $basePath = '' ) {
+	public function __construct( $routes = array(), $basePath = '', $matchTypes = array() ) {
 		$this->basePath = $basePath;
+		$this->matchTypes = array_merge($this->matchTypes, $matchTypes);
+
 		foreach( $routes as $route ) {
 			call_user_func_array(array($this,'map'),$route);
 		}
@@ -27,6 +38,15 @@ class AltoRouter {
 		$this->basePath = $basePath;
 	}
 
+	/**
+	 * Add a new named match type. It uses array_merge so keys can be overwritten.
+	 *
+	 * @param array $matchType The key is the name and the value is the regex.
+	 */
+	public function addMatchType($matchTypes) {
+		$this->matchTypes = array_merge($this->matchTypes, $matchTypes);
+	}
+
 	/**
 	 * Map a route to a target
 	 *
@@ -205,20 +225,12 @@ class AltoRouter {
 	private function compileRoute($route) {
 		if (preg_match_all('`(/|\.|)\[([^:\]]*+)(?::([^:\]]*+))?\](\?|)`', $route, $matches, PREG_SET_ORDER)) {
 
-			$match_types = array(
-				'i'  => '[0-9]++',
-				'a'  => '[0-9A-Za-z]++',
-				'h'  => '[0-9A-Fa-f]++',
-				'*'  => '.+?',
-				'**' => '.++',
-				''   => '[^/\.]++'
-			);
-
+			$matchTypes = $this->matchTypes;
 			foreach ($matches as $match) {
 				list($block, $pre, $type, $param, $optional) = $match;
 
-				if (isset($match_types[$type])) {
-					$type = $match_types[$type];
+				if (isset($matchTypes[$type])) {
+					$type = $matchTypes[$type];
 				}
 				if ($pre === '.') {
 					$pre = '\.';
diff --git a/AltoRouterTest.php b/AltoRouterTest.php
index f40176b..16199a0 100644
--- a/AltoRouterTest.php
+++ b/AltoRouterTest.php
@@ -3,7 +3,7 @@
 require 'AltoRouter.php';
 
 class AltoRouterDebug extends AltoRouter{
-	
+
 	public function getNamedRoutes(){
 		return $this->namedRoutes;
 	}
@@ -15,6 +15,7 @@ class AltoRouterDebug extends AltoRouter{
 	public function getBasePath(){
 		return $this->basePath;
 	}
+
 }
 
 /**
@@ -264,4 +265,29 @@ class AltoRouterTest extends PHPUnit_Framework_TestCase
 		$this->assertFalse($this->router->match('/some-other-thing', 'GET'));
 		
 	}
+
+	public function testMatchWithCustomNamedRegex()
+	{
+		$this->router->addMatchType(array('cId' => '[a-zA-Z]{2}[0-9](?:_[0-9]++)?'));
+		$this->router->map('GET', '/bar/[cId:customId]', 'bar_action', 'bar_route');
+		
+		$this->assertEquals(array(
+			'target' => 'bar_action',
+			'params' => array(
+				'customId' => 'AB1',
+			),
+			'name' => 'bar_route'
+		), $this->router->match('/bar/AB1', 'GET'));
+
+		$this->assertEquals(array(
+			'target' => 'bar_action',
+			'params' => array(
+				'customId' => 'AB1_0123456789',
+			),
+			'name' => 'bar_route'
+		), $this->router->match('/bar/AB1_0123456789', 'GET'));
+		
+		$this->assertFalse($this->router->match('/some-other-thing', 'GET'));
+		
+	}
 }