diff --git a/app/src/Service/Money.php b/app/src/Service/Money.php
index f28f1cd..d7b25c7 100644
--- a/app/src/Service/Money.php
+++ b/app/src/Service/Money.php
@@ -17,7 +17,7 @@ class Money
     protected array $providers = [];
     public function register(Provider $provider): Money
     {
-        if (!in_array($provider, $this->providers)) {
+        if (in_array($provider, $this->providers)) {
             return $this;
         }
         $this->providers []= $provider;