diff --git a/src/Composer/Autoload/AutoloadGenerator.php b/src/Composer/Autoload/AutoloadGenerator.php
index efb8c7cef..6fa00a0a8 100644
--- a/src/Composer/Autoload/AutoloadGenerator.php
+++ b/src/Composer/Autoload/AutoloadGenerator.php
@@ -208,7 +208,6 @@ class AutoloadGenerator
         $filesystem->ensureDirectoryExists($targetDir);
 
         $vendorPathCode = $filesystem->findShortestPathCode(realpath($targetDir), $vendorPath, true);
-        $vendorPathCode52 = str_replace('__DIR__', 'dirname(__FILE__)', $vendorPathCode);
         $vendorPathToTargetDirCode = $filesystem->findShortestPathCode($vendorPath, realpath($targetDir), true);
 
         $appBaseDirCode = $filesystem->findShortestPathCode($vendorPath, $basePath, true);
@@ -219,7 +218,7 @@ class AutoloadGenerator
 
 // autoload_namespaces.php @generated by Composer
 
-\$vendorDir = $vendorPathCode52;
+\$vendorDir = $vendorPathCode;
 \$baseDir = $appBaseDirCode;
 
 return array(
@@ -231,7 +230,7 @@ EOF;
 
 // autoload_psr4.php @generated by Composer
 
-\$vendorDir = $vendorPathCode52;
+\$vendorDir = $vendorPathCode;
 \$baseDir = $appBaseDirCode;
 
 return array(
@@ -279,7 +278,7 @@ EOF;
 
 // autoload_classmap.php @generated by Composer
 
-\$vendorDir = $vendorPathCode52;
+\$vendorDir = $vendorPathCode;
 \$baseDir = $appBaseDirCode;
 
 return array(
@@ -390,13 +389,13 @@ EOF;
         $filesystem->filePutContentsIfModified($targetDir.'/autoload_psr4.php', $psr4File);
         $filesystem->filePutContentsIfModified($targetDir.'/autoload_classmap.php', $classmapFile);
         $includePathFilePath = $targetDir.'/include_paths.php';
-        if ($includePathFileContents = $this->getIncludePathsFile($packageMap, $filesystem, $basePath, $vendorPath, $vendorPathCode52, $appBaseDirCode)) {
+        if ($includePathFileContents = $this->getIncludePathsFile($packageMap, $filesystem, $basePath, $vendorPath, $vendorPathCode, $appBaseDirCode)) {
             $filesystem->filePutContentsIfModified($includePathFilePath, $includePathFileContents);
         } elseif (file_exists($includePathFilePath)) {
             unlink($includePathFilePath);
         }
         $includeFilesFilePath = $targetDir.'/autoload_files.php';
-        if ($includeFilesFileContents = $this->getIncludeFilesFile($autoloads['files'], $filesystem, $basePath, $vendorPath, $vendorPathCode52, $appBaseDirCode)) {
+        if ($includeFilesFileContents = $this->getIncludeFilesFile($autoloads['files'], $filesystem, $basePath, $vendorPath, $vendorPathCode, $appBaseDirCode)) {
             $filesystem->filePutContentsIfModified($includeFilesFilePath, $includeFilesFileContents);
         } elseif (file_exists($includeFilesFilePath)) {
             unlink($includeFilesFilePath);
diff --git a/tests/Composer/Test/Autoload/AutoloadGeneratorTest.php b/tests/Composer/Test/Autoload/AutoloadGeneratorTest.php
index 623544c72..96f8d4584 100644
--- a/tests/Composer/Test/Autoload/AutoloadGeneratorTest.php
+++ b/tests/Composer/Test/Autoload/AutoloadGeneratorTest.php
@@ -641,7 +641,7 @@ class AutoloadGeneratorTest extends TestCase
 
 // autoload_classmap.php @generated by Composer
 
-\$vendorDir = dirname(dirname(__FILE__));
+\$vendorDir = dirname(__DIR__);
 \$baseDir = dirname(\$vendorDir);
 
 return array(
@@ -1113,7 +1113,7 @@ EOF;
 
 // autoload_namespaces.php @generated by Composer
 
-\$vendorDir = dirname(dirname(__FILE__));
+\$vendorDir = dirname(__DIR__);
 \$baseDir = dirname(\$vendorDir);
 
 return array(
@@ -1130,7 +1130,7 @@ EOF;
 
 // autoload_psr4.php @generated by Composer
 
-\$vendorDir = dirname(dirname(__FILE__));
+\$vendorDir = dirname(__DIR__);
 \$baseDir = dirname(\$vendorDir);
 
 return array(
@@ -1143,7 +1143,7 @@ EOF;
 
 // autoload_classmap.php @generated by Composer
 
-\$vendorDir = dirname(dirname(__FILE__));
+\$vendorDir = dirname(__DIR__);
 \$baseDir = dirname(\$vendorDir);
 
 return array(
@@ -1382,7 +1382,7 @@ EOF;
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir).'/working-dir';
 
 return array(
@@ -1397,7 +1397,7 @@ EOF;
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir).'/working-dir';
 
 return array(
@@ -1412,7 +1412,7 @@ EOF;
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir).'/working-dir';
 
 return array(
@@ -1471,7 +1471,7 @@ EOF;
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir).'/working-dir';
 
 return array(
@@ -1485,7 +1485,7 @@ EOF;
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir).'/working-dir';
 
 return array(
@@ -1499,7 +1499,7 @@ EOF;
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir).'/working-dir';
 
 return array(
@@ -1540,7 +1540,7 @@ EOF;
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
@@ -1554,7 +1554,7 @@ EOF;
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
@@ -1568,7 +1568,7 @@ EOF;
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
@@ -1603,7 +1603,7 @@ EOF;
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
@@ -1617,7 +1617,7 @@ EOF;
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap.php
index e49f8b7d8..e6e196fbd 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap2.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap2.php
index 60cec93b3..be90909f2 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap2.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap2.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname(dirname($vendorDir));
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap3.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap3.php
index 3bfb2bb80..bac856107 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap3.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap3.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = $vendorDir;
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap4.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap4.php
index 767ec5e5d..c502deeb6 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap4.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap4.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap5.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap5.php
index e88a14606..30f400927 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap5.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap5.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap6.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap6.php
index d7a357ace..32dbede6e 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap6.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap6.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap7.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap7.php
index 6818e6b82..d64af0b3c 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap7.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap7.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap8.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap8.php
index a002faf5a..62223d962 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap8.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap8.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap9.php b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap9.php
index 75bc86230..1b7069d20 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_classmap9.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_classmap9.php
@@ -2,7 +2,7 @@
 
 // autoload_classmap.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_files.php b/tests/Composer/Test/Autoload/Fixtures/autoload_files.php
index 9ffb4b7e2..9f6bd9d6d 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_files.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_files.php
@@ -2,7 +2,7 @@
 
 // autoload_files.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_files2.php b/tests/Composer/Test/Autoload/Fixtures/autoload_files2.php
index 7442a7eaf..a4ed4ae84 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_files2.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_files2.php
@@ -2,7 +2,7 @@
 
 // autoload_files.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_files_files_by_dependency.php b/tests/Composer/Test/Autoload/Fixtures/autoload_files_files_by_dependency.php
index 6c8ce0466..fa4b4f317 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_files_files_by_dependency.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_files_files_by_dependency.php
@@ -2,7 +2,7 @@
 
 // autoload_files.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions.php b/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions.php
index 0889edabc..9b4ac6b71 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions.php
@@ -2,7 +2,7 @@
 
 // autoload_files.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions_with_removed_extra.php b/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions_with_removed_extra.php
index af3fd800a..93ef1eddf 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions_with_removed_extra.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_files_functions_with_removed_extra.php
@@ -2,7 +2,7 @@
 
 // autoload_files.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_files_target_dir.php b/tests/Composer/Test/Autoload/Fixtures/autoload_files_target_dir.php
index e2ca3d25e..21995f8f7 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_files_target_dir.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_files_target_dir.php
@@ -2,7 +2,7 @@
 
 // autoload_files.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_main.php b/tests/Composer/Test/Autoload/Fixtures/autoload_main.php
index 2f5e863af..3026720f2 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_main.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_main.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_main2.php b/tests/Composer/Test/Autoload/Fixtures/autoload_main2.php
index 93a2ec130..9f5e0316e 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_main2.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_main2.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname(dirname($vendorDir));
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_main3.php b/tests/Composer/Test/Autoload/Fixtures/autoload_main3.php
index c5a2ab17d..c16de9e6b 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_main3.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_main3.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = $vendorDir;
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_main4.php b/tests/Composer/Test/Autoload/Fixtures/autoload_main4.php
index e6032e67e..e14991d41 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_main4.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_main4.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_main5.php b/tests/Composer/Test/Autoload/Fixtures/autoload_main5.php
index 15cb2622b..533a59a96 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_main5.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_main5.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_phar.php b/tests/Composer/Test/Autoload/Fixtures/autoload_phar.php
index 7654005f3..c916938df 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_phar.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_phar.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_phar_psr4.php b/tests/Composer/Test/Autoload/Fixtures/autoload_phar_psr4.php
index f6142a001..4adbc13b4 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_phar_psr4.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_phar_psr4.php
@@ -2,7 +2,7 @@
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_psr4.php b/tests/Composer/Test/Autoload/Fixtures/autoload_psr4.php
index 78b609869..cc48ab1c6 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_psr4.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_psr4.php
@@ -2,7 +2,7 @@
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_2.php b/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_2.php
index ab9ca2f54..92f42eddf 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_2.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_2.php
@@ -2,7 +2,7 @@
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname(dirname($vendorDir));
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_3.php b/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_3.php
index a903b17b8..37134c608 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_3.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_psr4_3.php
@@ -2,7 +2,7 @@
 
 // autoload_psr4.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = $vendorDir;
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/autoload_vendors.php b/tests/Composer/Test/Autoload/Fixtures/autoload_vendors.php
index 36106d56c..54c0666ee 100644
--- a/tests/Composer/Test/Autoload/Fixtures/autoload_vendors.php
+++ b/tests/Composer/Test/Autoload/Fixtures/autoload_vendors.php
@@ -2,7 +2,7 @@
 
 // autoload_namespaces.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/include_paths.php b/tests/Composer/Test/Autoload/Fixtures/include_paths.php
index 35f66c9ce..14917e42c 100644
--- a/tests/Composer/Test/Autoload/Fixtures/include_paths.php
+++ b/tests/Composer/Test/Autoload/Fixtures/include_paths.php
@@ -2,7 +2,7 @@
 
 // include_paths.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/include_paths_functions.php b/tests/Composer/Test/Autoload/Fixtures/include_paths_functions.php
index f1095cf67..d41eb2c40 100644
--- a/tests/Composer/Test/Autoload/Fixtures/include_paths_functions.php
+++ b/tests/Composer/Test/Autoload/Fixtures/include_paths_functions.php
@@ -2,7 +2,7 @@
 
 // include_paths.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(
diff --git a/tests/Composer/Test/Autoload/Fixtures/include_paths_functions_with_removed_extra.php b/tests/Composer/Test/Autoload/Fixtures/include_paths_functions_with_removed_extra.php
index 4403b11ec..3cf11d580 100644
--- a/tests/Composer/Test/Autoload/Fixtures/include_paths_functions_with_removed_extra.php
+++ b/tests/Composer/Test/Autoload/Fixtures/include_paths_functions_with_removed_extra.php
@@ -2,7 +2,7 @@
 
 // include_paths.php @generated by Composer
 
-$vendorDir = dirname(dirname(__FILE__));
+$vendorDir = dirname(__DIR__);
 $baseDir = dirname($vendorDir);
 
 return array(