diff --git a/src/Whmcs.php b/src/Whmcs.php
index 3aa2177..8c99423 100644
--- a/src/Whmcs.php
+++ b/src/Whmcs.php
@@ -60,6 +60,6 @@ public function processResponse($response)
   }
   public function __call($function, array $arguments=[])
   {
-    return call_user_func_array([$this, 'execute'], [$function, $arguments]);
+    return call_user_func_array([$this, 'execute'], [$function, $arguments[0]]);
   }
 }