diff --git a/question/format/xml/format.php b/question/format/xml/format.php
index 65b3bae6c7a..3b3d904bf71 100755
--- a/question/format/xml/format.php
+++ b/question/format/xml/format.php
@@ -886,7 +886,7 @@ class qformat_xml extends qformat_default {
                 $expout .= "    <tolerance>$tolerance</tolerance>\n";
                 $expout .= "    <tolerancetype>$tolerancetype</tolerancetype>\n";
                 $expout .= "    <correctanswerformat>$correctanswerformat</correctanswerformat>\n";
-                $expout .= "    <correctanswerlength>$correctanswerformat</correctanswerlength>\n";
+                $expout .= "    <correctanswerlength>$correctanswerlength</correctanswerlength>\n";
                 $expout .= "    <feedback>".$this->writetext( $answer->feedback )."</feedback>\n";
                 $expout .= "</answer>\n";
             }