diff --git a/interface/lib/classes/tform_base.inc.php b/interface/lib/classes/tform_base.inc.php
index e53cb397cdeb3be75f1eb1ef536905889f2e279c..8cf4de5cdf3e401f7243e8a62c8bc8a6e7d00999 100644
--- a/interface/lib/classes/tform_base.inc.php
+++ b/interface/lib/classes/tform_base.inc.php
@@ -657,7 +657,7 @@ class tform_base {
 		* @param record = Datensatz als Array
 		* @return record
 		*/
-		function _encode($record,$tab,$dbencode = true,$api = false) {
+		protected function _encode($record,$tab,$dbencode = true,$api = false) {
 			global $app;
 			if($api == true) $fields = &$this->formDef['fields'];
 			else $fields = &$this->formDef['tabs'][$tab]['fields'];