diff --git a/xymon/plugins/client/ext/smart b/xymon/plugins/client/ext/smart
index 5eb524a..bef16f1 100755
--- a/xymon/plugins/client/ext/smart
+++ b/xymon/plugins/client/ext/smart
@@ -22,6 +22,15 @@ my $CACHEFILE = "$ENV{'XYMONTMP'}/$ENV{'MACHINEDOTS'}.smart.cache";
 
 &load_config("$ENV{'XYMONTMP'}/logfetch.$ENV{'MACHINEDOTS'}.cfg");
 
+my @disks_stat = stat($temp_disk_list);
+my $disks_mtime = scalar @disks_stat ? $disks_stat[9] : 0;
+#
+# Regenerate disks list if the file is too old (600 minutes)
+if (time() - $disks_mtime > 600)
+{
+    unlink $temp_disk_list;
+}
+
 if (-e $temp_disk_list) {
     # Should use the existing file
 }