diff --git a/composer.json b/composer.json
index 2d7b451159..c88ca4563c 100644
--- a/composer.json
+++ b/composer.json
@@ -101,6 +101,9 @@
             "**/Tests/"
         ]
     },
+    "autoload-dev": {
+        "files": [ "src/Symfony/Component/VarDumper/Resources/functions/dump.php" ]
+    },
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {