diff --git a/phpstan-composer.json b/phpstan-composer.json
index 04b3e66..828457a 100644
--- a/phpstan-composer.json
+++ b/phpstan-composer.json
@@ -8,7 +8,7 @@
    },
    "autoload": {
       "psr-4": {
-         "": "./src"
+         "DevTools\\": "./src"
       }
    }
 }