diff --git a/src/OP/API.php b/src/OP/API.php
index f7c9e28..629744c 100644
--- a/src/OP/API.php
+++ b/src/OP/API.php
@@ -162,7 +162,7 @@ public static function convertXmlToPhpObj ($node)
                 }
             }
         }
-        return 0 < count($ret) ? $ret : null;
+        return !empty($ret) ? $ret : null;
     }
     // parse array
     protected static function parseArray ($node)