diff --git a/src/Silex/Api/composer.json b/src/Silex/Api/composer.json
index d94ae3db4..da53e8f23 100644
--- a/src/Silex/Api/composer.json
+++ b/src/Silex/Api/composer.json
@@ -24,9 +24,8 @@
         "silex/silex": "For BootableProviderInterface and ControllerProviderInterface"
     },
     "autoload": {
-        "psr-0": { "Silex\\Api": "" }
+        "psr-4": { "Silex\\Api\\": "" }
     },
-    "target-dir": "Silex/Api",
     "extra": {
         "branch-alias": {
             "dev-master": "2.0.x-dev"
diff --git a/src/Silex/Provider/composer.json b/src/Silex/Provider/composer.json
index a869d4f3a..50d3e5c8f 100644
--- a/src/Silex/Provider/composer.json
+++ b/src/Silex/Provider/composer.json
@@ -21,9 +21,8 @@
         "silex/api": "~2.0"
     },
     "autoload": {
-        "psr-0": { "Silex\\Provider": "" }
+        "psr-4": { "Silex\\Provider\\": "" }
     },
-    "target-dir": "Silex/Provider",
     "extra": {
         "branch-alias": {
             "dev-master": "2.0.x-dev"