diff --git a/lodel/scripts/logic/class.mainplugins.php b/lodel/scripts/logic/class.mainplugins.php
index 10f78db2f..4d3131627 100644
--- a/lodel/scripts/logic/class.mainplugins.php
+++ b/lodel/scripts/logic/class.mainplugins.php
@@ -676,7 +676,7 @@ function_exists('validfield') || include 'validfunc.php';
 				}
 			}
 
-			$err = validfield($context['data'][$name], $param['type'], $param['defaultValue'], $name, 'data', SITEROOT.'upload/plugins/'.$this->_plugin['name']);
+			$err = validfield($context['data'][$name], $param['type'], $param['defaultValue'], $name, 'data', 'upload/plugins/'.$this->_plugin['name']);
 
 			if(true !== $err)
 				$error[$name] = $err;
@@ -784,4 +784,4 @@ protected function _uniqueFields()
 		return array(array('name'), );
 	}
 	// end{uniquefields} automatic generation  //
-} // class 
\ No newline at end of file
+} // class