diff --git a/composer.json b/composer.json
index e96eaff9fc..186a21b54b 100644
--- a/composer.json
+++ b/composer.json
@@ -57,7 +57,8 @@
         "psr-4": {
             "Aws\\": "src/"
         },
-        "files": ["src/functions.php"]
+        "files": ["src/functions.php"],
+        "exclude-from-classmap": ["src/data/"]
     },
     "autoload-dev": {
         "psr-4": {