diff --git a/Model/Config.php b/Model/Config.php
index b3af677..81d5b1b 100644
--- a/Model/Config.php
+++ b/Model/Config.php
@@ -252,7 +252,7 @@ public function getFlexMethods($scopeId = null)
             $scopeId
         );
 
-        return !is_array($methods) ? (array) json_decode($methods, true) : $methods;
+        return is_string($methods) ? (array) json_decode($methods, true) : $methods;
     }
 
     /**