diff --git a/backup/backup_execute.html b/backup/backup_execute.html
index cf0d25e22f3..4480547e067 100644
--- a/backup/backup_execute.html
+++ b/backup/backup_execute.html
@@ -22,7 +22,8 @@
             //Check module info
             $var = "backup_".$modname;
             if (!isset($$var)) {
-                $$var = 1;
+                //Every undefined backup_XXXX isn't exported
+                $$var = 0;
             }
             //Now stores all the mods preferences into an array into preferences
             $preferences->mods[$modname]->backup = $$var;
diff --git a/backup/lib.php b/backup/lib.php
index 9e483265b37..1744f61fe7c 100644
--- a/backup/lib.php
+++ b/backup/lib.php
@@ -206,7 +206,7 @@
         global $CFG; 
 
         //Change this if you want !!
-        $days = 1;
+        $days = 2;
         //End change this
         $seconds = $days * 24 * 60 * 60;
         $delete_from = time()-$seconds;