diff --git a/src/XeroPHP/Traits/PracticeManager/CustomFieldValueTrait.php b/src/XeroPHP/Traits/PracticeManager/CustomFieldValueTrait.php
index <HASH>..<HASH> 100644
--- a/src/XeroPHP/Traits/PracticeManager/CustomFieldValueTrait.php
+++ b/src/XeroPHP/Traits/PracticeManager/CustomFieldValueTrait.php
@@ -46,7 +46,7 @@ trait CustomFieldValueTrait
             $this->getGUID()
         );
 
-        $url = new URL($this->_application, $uri);
+        $url = new URL($this->_application, $uri, URL::API_PRACTICE_MANAGER);
         $request = new Request($this->_application, $url, Request::METHOD_GET);
         $request->send();
Corrected API for CustomFieldvalueTrait