diff --git a/ktapi/KTAPIDocument.inc.php b/ktapi/KTAPIDocument.inc.php
index 55e9492..56e26a7 100644
--- a/ktapi/KTAPIDocument.inc.php
+++ b/ktapi/KTAPIDocument.inc.php
@@ -1605,7 +1605,7 @@ class KTAPI_Document extends KTAPI_FolderItem
 		$detail['is_immutable'] = (bool) $document->getImmutable();
 
 		// check permissions
-		$detail['permissions'] = KTWSAPI_Document::get_permission_string($document);
+		$detail['permissions'] = KTAPI_Document::get_permission_string($document);
 
 		// get workflow name
 		$workflowid = $document->getWorkflowId();
diff --git a/ktapi/KTAPIFolder.inc.php b/ktapi/KTAPIFolder.inc.php
index 99b02bb..c32acae 100644
--- a/ktapi/KTAPIFolder.inc.php
+++ b/ktapi/KTAPIFolder.inc.php
@@ -399,7 +399,7 @@ class KTAPI_Folder extends KTAPI_FolderItem
 							'version' => 'n/a',
 
 							'is_immutable'=> 'n/a',
-							'permissions' => KTWSAPI_Folder::get_permission_string($folder),
+							'permissions' => KTAPI_Folder::get_permission_string($folder),
 
 							'workflow'=>'n/a',
 							'workflow_state'=>'n/a',
@@ -533,7 +533,7 @@ class KTAPI_Folder extends KTAPI_FolderItem
 							'version' =>  $document->getMajorVersionNumber() . '.' . $document->getMinorVersionNumber(),
 
 							'is_immutable'=> $document->getImmutable()?'true':'false',
-							'permissions' => KTWSAPI_Document::get_permission_string($document),
+							'permissions' => KTAPI_Document::get_permission_string($document),
 
 							'workflow'=> $workflow,
 							'workflow_state'=> $state,