diff --git a/lib/Entities/CustomFieldEntity.php b/lib/Entities/CustomFieldEntity.php
index b6bfc341b8..fb535f2cce 100644
--- a/lib/Entities/CustomFieldEntity.php
+++ b/lib/Entities/CustomFieldEntity.php
@@ -52,7 +52,7 @@ class CustomFieldEntity {
   }
 
   /**
-   * @return array
+   * @return array|null
    */
   public function getParams() {
     return $this->params;