diff --git a/box.json b/box.json
index eb10756e..83fb9bcd 100644
--- a/box.json
+++ b/box.json
@@ -8,7 +8,7 @@
     "finder": [
         {
             "name": "*.php",
-            "exclude": ["Tests"],
+            "exclude": ["tests"],
             "in": "vendor"
         }
     ],