diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index bc1eac93e6..a782a3f074 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -224,7 +224,7 @@ abstract class FrameworkExtensionTest extends TestCase
         $this->assertEquals('translator.default', (string) $container->getAlias('translator'), '->registerTranslatorConfiguration() redefines translator service from identity to real translator');
         $options = $container->getDefinition('translator.default')->getArgument(3);
 
-        $files = array_map(function ($resource) { return realpath($resource); }, $options['resource_files']['en']);
+        $files = array_map('realpath', $options['resource_files']['en']);
         $ref = new \ReflectionClass('Symfony\Component\Validator\Validation');
         $this->assertContains(
             strtr(dirname($ref->getFileName()).'/Resources/translations/validators.en.xlf', '/', DIRECTORY_SEPARATOR),
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
index ebb22fddac..d273fb0594 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
@@ -73,7 +73,7 @@ abstract class CompleteConfigurationTest extends TestCase
         foreach (array_keys($arguments[1]) as $contextId) {
             $contextDef = $container->getDefinition($contextId);
             $arguments = $contextDef->getArguments();
-            $listeners[] = array_map(function ($ref) { return (string) $ref; }, $arguments['index_0']);
+            $listeners[] = array_map('strval', $arguments['index_0']);
         }
 
         $this->assertEquals(array(
diff --git a/src/Symfony/Component/Finder/Tests/FinderTest.php b/src/Symfony/Component/Finder/Tests/FinderTest.php
index 28bb4dbdbb..f445c79c5e 100644
--- a/src/Symfony/Component/Finder/Tests/FinderTest.php
+++ b/src/Symfony/Component/Finder/Tests/FinderTest.php
@@ -317,7 +317,7 @@ class FinderTest extends Iterator\RealIteratorTestCase
 
         $finder = $this->buildFinder();
         $a = iterator_to_array($finder->directories()->in(self::$tmpDir));
-        $a = array_values(array_map(function ($a) { return (string) $a; }, $a));
+        $a = array_values(array_map('strval', $a));
         sort($a);
         $this->assertEquals($expected, $a, 'implements the \IteratorAggregate interface');
     }