diff --git a/app/code/Magento/Config/Model/Config/Backend/Currency/AbstractCurrency.php b/app/code/Magento/Config/Model/Config/Backend/Currency/AbstractCurrency.php
index d8a9d4a00cb88..c3d6348526e33 100644
--- a/app/code/Magento/Config/Model/Config/Backend/Currency/AbstractCurrency.php
+++ b/app/code/Magento/Config/Model/Config/Backend/Currency/AbstractCurrency.php
@@ -32,7 +32,8 @@ protected function _getAllowedCurrencies()
                 )
             );
         }
-        return $this->getData('groups/options/fields/allow/value');
+        
+        return (array)$this->getData('groups/options/fields/allow/value');
     }
 
     /**