diff --git a/backup/mod/quiz/backuplib.php b/backup/mod/quiz/backuplib.php
index f06c4dbc86a..d697e35dfa1 100644
--- a/backup/mod/quiz/backuplib.php
+++ b/backup/mod/quiz/backuplib.php
@@ -272,6 +272,7 @@
             foreach ($matchs as $match) {
                 $status =fwrite ($bf,start_tag("MATCH",7,true));
                 //Print match contents
+                fwrite ($bf,full_tag("ID",8,false,$match->id));
                 fwrite ($bf,full_tag("QUESTIONTEXT",8,false,$match->questiontext));
                 fwrite ($bf,full_tag("ANSWERTEXT",8,false,$match->answertext));
                 $status =fwrite ($bf,end_tag("MATCH",7,true));