diff --git a/etc/inc/rrd.inc b/etc/inc/rrd.inc
index c620419f28..0e3dfd6ef9 100644
--- a/etc/inc/rrd.inc
+++ b/etc/inc/rrd.inc
@@ -55,7 +55,7 @@ function restore_rrd() {
 
 	$rrdrestore = "";
 	$rrdreturn = "";
-	if (file_exists("{$g['cf_conf_path']}/rrd.tgz")) {
+	if (file_exists("{$g['cf_conf_path']}/rrd.tgz") && (isset($config['system']['use_mfs_tmpvar']) || $g['platform'] != "pfSense")) {
 		foreach (glob("{$rrddbpath}/*.xml") as $xml_file) {
 			@unlink($xml_file);
 		}
@@ -980,4 +980,4 @@ function kill_traffic_collector() {
 	killbypid("{$g['varrun_path']}/updaterrd.sh.pid");
 }
 
-?>
+?>
\ No newline at end of file