diff --git a/docs/en/reference/attributes-reference.rst b/docs/en/reference/attributes-reference.rst
index 1dc27cc36a1..603c1c04845 100644
--- a/docs/en/reference/attributes-reference.rst
+++ b/docs/en/reference/attributes-reference.rst
@@ -570,7 +570,7 @@ Example with partial indexes:
     <?php
     use Doctrine\ORM\Mapping\Index;
 
-    #[Index(name: "search_idx", columns: {"category"},
+    #[Index(name: "search_idx", columns: ["category"],
         options: [
             "where": "((category IS NOT NULL))"
         ]