diff --git a/composer.json b/composer.json
index e1ff974..52e2f52 100644
--- a/composer.json
+++ b/composer.json
@@ -20,10 +20,6 @@
     "phpunit/phpunit": "~4.0"
   },
   "autoload": {
-    "psr-0": {
-      "OpenPGP": "lib/"
-    },
-    "files": [
-    ]
+    "classmap": ["lib/"]
   }
 }
\ No newline at end of file