diff --git a/magmi/plugins/5b5/general/attributesetimport/attributesetimport.php b/magmi/plugins/5b5/general/attributesetimport/attributesetimport.php
index 740f6abb..a317680d 100644
--- a/magmi/plugins/5b5/general/attributesetimport/attributesetimport.php
+++ b/magmi/plugins/5b5/general/attributesetimport/attributesetimport.php
@@ -238,7 +238,7 @@ private function prepareCSV($prefix)
             $url = $this->getParam($prefix.":remoteurl", "");
             $outname = $this->getRemoteFile($prefix, $url);
             $this->setParam($prefix.":filename", $outname);
-            $csvreader->initialize($this->_params);
+            $csvreader->initialize($this->_params, $prefix);
         }
         $csvreader->checkCSV();