diff --git a/src/Traits/GetWallets.php b/src/Traits/GetWallets.php
index 4606dd4..7c42a98 100644
--- a/src/Traits/GetWallets.php
+++ b/src/Traits/GetWallets.php
@@ -6,12 +6,10 @@
 
 trait GetWallets
 {
-    private function walletsInOrder()
+    private function walletsInOrder(): array
     {
         return array_map(
-            function ($enumCase) {
-                return $enumCase->value;
-            },
+            fn ($enumCase) => $enumCase->value,
             WalletEnums::cases()
         );
     }