diff --git a/src/Repository/InfoRepository.php b/src/Repository/InfoRepository.php
index ffe3351f..22a2905b 100644
--- a/src/Repository/InfoRepository.php
+++ b/src/Repository/InfoRepository.php
@@ -70,6 +70,6 @@ public function getShopCountryCode()
         $this->query->where('c.id_country = ' . \Configuration::get('PS_COUNTRY_DEFAULT'));
         $this->query->select('c.iso_code');
 
-        return $this->db->getValue($this->query);
+        return (string) $this->db->getValue($this->query);
     }
 }