diff --git a/backup/backuplib.php b/backup/backuplib.php
index e9cd24e433f..30641e329de 100644
--- a/backup/backuplib.php
+++ b/backup/backuplib.php
@@ -542,6 +542,7 @@
             fwrite ($bf,full_tag("STARTDATE",3,false,$course->startdate));
             fwrite ($bf,full_tag("NUMSECTIONS",3,false,$course->numsections));
             fwrite ($bf,full_tag("SHOWRECENT",3,false,$course->showrecent));
+            fwrite ($bf,full_tag("MAXBYTES",3,false,$course->maxbytes));
             fwrite ($bf,full_tag("MARKER",3,false,$course->marker));
             fwrite ($bf,full_tag("VISIBLE",3,false,$course->visible));
             fwrite ($bf,full_tag("TIMECREATED",3,false,$course->timecreated));
diff --git a/backup/restorelib.php b/backup/restorelib.php
index 9a4564aa2c5..b5e47a56d02 100644
--- a/backup/restorelib.php
+++ b/backup/restorelib.php
@@ -317,6 +317,7 @@
             $course->startdate = addslashes($course_header->course_startdate);
             $course->numsections = addslashes($course_header->course_numsections);
             $course->showrecent = addslashes($course_header->course_showrecent);
+            $course->maxbytes = addslashes($course_header->course_maxbytes);
             $course->marker = addslashes($course_header->course_marker);
             $course->visible = addslashes($course_header->course_visible);
             $course->timecreated = addslashes($course_header->course_timecreated);
@@ -1262,6 +1263,9 @@
                         case "SHOWRECENT":
                             $this->info->course_showrecent = $this->getContents();
                             break;
+                        case "MAXBYTES":
+                            $this->info->course_maxbytes = $this->getContents();
+                            break;
                         case "MARKER":
                             $this->info->course_marker = $this->getContents();
                             break;