diff --git a/etc/rc b/etc/rc
index 90927a2743..4306ae2d9b 100755
--- a/etc/rc
+++ b/etc/rc
@@ -232,6 +232,8 @@ extension=radius.so
 EOF
 fi
 
+rm -f /cf/conf/backup/backup.cache
+
 # let the PHP-based configuration subsystem set up the system now
 echo -n "Launching PHP init system..."
 /etc/rc.bootup