diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/ApacheMatcherDumperTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/ApacheMatcherDumperTest.php
index da72d6b3a9..72bee71002 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/ApacheMatcherDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/ApacheMatcherDumperTest.php
@@ -150,7 +150,8 @@ class ApacheMatcherDumperTest extends \PHPUnit_Framework_TestCase
         $route3 = new Route('/route3', array(), array(), array(), 'b.example.com');
         $collection2->add('route3', $route3);
 
-        $collection1->addCollection($collection2, '/c2');
+        $collection2->addPrefix('/c2');
+        $collection1->addCollection($collection2);
 
         $route4 = new Route('/route4', array(), array(), array(), 'a.example.com');
         $collection1->add('route4', $route4);
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
index 4764df617d..542ede85c0 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
@@ -118,14 +118,17 @@ class PhpMatcherDumperTest extends \PHPUnit_Framework_TestCase
         $collection1->add('overridden', new Route('/overridden1'));
         $collection1->add('foo1', new Route('/{foo}'));
         $collection1->add('bar1', new Route('/{bar}'));
+        $collection1->addPrefix('/b\'b');
         $collection2 = new RouteCollection();
-        $collection2->addCollection($collection1, '/b\'b');
+        $collection2->addCollection($collection1);
         $collection2->add('overridden', new Route('/{var}', array(), array('var' => '.*')));
         $collection1 = new RouteCollection();
         $collection1->add('foo2', new Route('/{foo1}'));
         $collection1->add('bar2', new Route('/{bar1}'));
-        $collection2->addCollection($collection1, '/b\'b');
-        $collection->addCollection($collection2, '/a');
+        $collection1->addPrefix('/b\'b');
+        $collection2->addCollection($collection1);
+        $collection2->addPrefix('/a');
+        $collection->addCollection($collection2);
 
         // overridden through addCollection() and multiple sub-collections with no own prefix
         $collection1 = new RouteCollection();
@@ -137,15 +140,16 @@ class PhpMatcherDumperTest extends \PHPUnit_Framework_TestCase
         $collection3->add('hey', new Route('/hey/'));
         $collection2->addCollection($collection3);
         $collection1->addCollection($collection2);
-        $collection->addCollection($collection1, '/multi');
+        $collection1->addPrefix('/multi');
+        $collection->addCollection($collection1);
 
         // "dynamic" prefix
         $collection1 = new RouteCollection();
         $collection1->add('foo3', new Route('/{foo}'));
         $collection1->add('bar3', new Route('/{bar}'));
-        $collection2 = new RouteCollection();
-        $collection2->addCollection($collection1, '/b');
-        $collection->addCollection($collection2, '/{_locale}');
+        $collection1->addPrefix('/b');
+        $collection1->addPrefix('{_locale}');
+        $collection->addCollection($collection1);
 
         // route between collections
         $collection->add('ababa', new Route('/ababa'));
@@ -153,7 +157,8 @@ class PhpMatcherDumperTest extends \PHPUnit_Framework_TestCase
         // collection with static prefix but only one route
         $collection1 = new RouteCollection();
         $collection1->add('foo4', new Route('/{foo}'));
-        $collection->addCollection($collection1, '/aba');
+        $collection1->addPrefix('/aba');
+        $collection->addCollection($collection1);
 
         // prefix and host
 
@@ -215,10 +220,12 @@ class PhpMatcherDumperTest extends \PHPUnit_Framework_TestCase
         $collection2->add('b', new Route('/{var}'));
         $collection3 = new RouteCollection();
         $collection3->add('c', new Route('/{var}'));
-
-        $collection2->addCollection($collection3, '/c');
-        $collection1->addCollection($collection2, '/b');
-        $collection->addCollection($collection1, '/a');
+        $collection3->addPrefix('/c');
+        $collection2->addCollection($collection3);
+        $collection2->addPrefix('/b');
+        $collection1->addCollection($collection2);
+        $collection1->addPrefix('/a');
+        $collection->addCollection($collection1);
 
         /* test case 2 */
 
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
index fee6fe2b6f..8a1428f170 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
@@ -130,14 +130,10 @@ class UrlMatcherTest extends \PHPUnit_Framework_TestCase
 
     public function testMatchWithPrefixes()
     {
-        $collection1 = new RouteCollection();
-        $collection1->add('foo', new Route('/{foo}'));
-
-        $collection2 = new RouteCollection();
-        $collection2->addCollection($collection1, '/b');
-
         $collection = new RouteCollection();
-        $collection->addCollection($collection2, '/a');
+        $collection->add('foo', new Route('/{foo}'));
+        $collection->addPrefix('/b');
+        $collection->addPrefix('/a');
 
         $matcher = new UrlMatcher($collection, new RequestContext());
         $this->assertEquals(array('_route' => 'foo', 'foo' => 'foo'), $matcher->match('/a/b/foo'));
@@ -145,14 +141,10 @@ class UrlMatcherTest extends \PHPUnit_Framework_TestCase
 
     public function testMatchWithDynamicPrefix()
     {
-        $collection1 = new RouteCollection();
-        $collection1->add('foo', new Route('/{foo}'));
-
-        $collection2 = new RouteCollection();
-        $collection2->addCollection($collection1, '/b');
-
         $collection = new RouteCollection();
-        $collection->addCollection($collection2, '/{_locale}');
+        $collection->add('foo', new Route('/{foo}'));
+        $collection->addPrefix('/b');
+        $collection->addPrefix('/{_locale}');
 
         $matcher = new UrlMatcher($collection, new RequestContext());
         $this->assertEquals(array('_locale' => 'fr', '_route' => 'foo', 'foo' => 'foo'), $matcher->match('/fr/b/foo'));