diff --git a/composer.json b/composer.json
index 5f8e6f6..be3ae53 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
         "symfony/symfony" : ">=2.0"
     },
     "autoload": {
-        "psr0": {
+        "psr-0": {
             "Acme\\PizzaBundle\\":""
         }
     },