diff --git a/src/Symfony/Component/ClassLoader/UniversalClassLoader.php b/src/Symfony/Component/ClassLoader/UniversalClassLoader.php
index f67a127e3d..60f245ad1b 100644
--- a/src/Symfony/Component/ClassLoader/UniversalClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/UniversalClassLoader.php
@@ -141,7 +141,17 @@ class UniversalClassLoader
     }
 
     /**
-     * Registers the directory to use as a fallback for class prefixes.
+     * Registers a directory to use as a fallback for namespaces.
+     *
+     * @param string $dir A directory
+     */
+    public function registerNamespaceFallback($dir)
+    {
+        $this->namespaceFallbacks[] = $dir;
+    }
+
+    /**
+     * Registers directories to use as a fallback for class prefixes.
      *
      * @param array $dirs An array of directories
      *
@@ -152,6 +162,16 @@ class UniversalClassLoader
         $this->prefixFallbacks = $dirs;
     }
 
+    /**
+     * Registers a directory to use as a fallback for class prefixes.
+     *
+     * @param string $dir A directory
+     */
+    public function registerPrefixFallback($dir)
+    {
+        $this->prefixFallbacks[] = $dir;
+    }
+
     /**
      * Registers an array of namespaces
      *
diff --git a/tests/Symfony/Tests/Component/ClassLoader/UniversalClassLoaderTest.php b/tests/Symfony/Tests/Component/ClassLoader/UniversalClassLoaderTest.php
index 92a4eeda06..a1fbfa5031 100644
--- a/tests/Symfony/Tests/Component/ClassLoader/UniversalClassLoaderTest.php
+++ b/tests/Symfony/Tests/Component/ClassLoader/UniversalClassLoaderTest.php
@@ -80,6 +80,20 @@ class UniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
         );
     }
 
+    public function testRegisterPrefixFallback()
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerPrefixFallback(__DIR__.DIRECTORY_SEPARATOR.'Fixtures/fallback');
+        $this->assertEquals(array(__DIR__.DIRECTORY_SEPARATOR.'Fixtures/fallback'), $loader->getPrefixFallbacks());
+    }
+
+    public function testRegisterNamespaceFallback()
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerNamespaceFallback(__DIR__.DIRECTORY_SEPARATOR.'Fixtures/Namespaced/fallback');
+        $this->assertEquals(array(__DIR__.DIRECTORY_SEPARATOR.'Fixtures/Namespaced/fallback'), $loader->getNamespaceFallbacks());
+    }
+
     /**
      * @dataProvider getLoadClassNamespaceCollisionTests
      */