diff --git a/webapp/services/PropertyChgService.php b/webapp/services/PropertyChgService.php
index 1df6173b..4fbf44a8 100644
--- a/webapp/services/PropertyChgService.php
+++ b/webapp/services/PropertyChgService.php
@@ -48,10 +48,13 @@ class PropertyChgService extends BaseService {
 
     public function toDto()
     {
-        return array(
-            'user_info' => $this->userChg ? User::info(myself()->_getOrmUserInfo()) : null,
+        $data = array(
             'container_chg' => $this->chgList
         );
+        if ($this->userChg) {
+            $data['user_info'] = User::info(myself()->_getOrmUserInfo());
+        }
+        return $data;
     }
 
     private function internalAddChg($name)