--- a/lib/device/device_id.c
+++ b/lib/device/device_id.c
@@ -1605,6 +1605,10 @@
 
 	/* Remove the n oldest files by sorting system.devices-*. */
 	setlocale(LC_COLLATE, "C"); /* Avoid sorting by locales */
+	#ifndef HAVE_VERSIONSORT
+	/* fallback to alphasort when versionsort is not defined */
+	#define versionsort     alphasort
+	#endif /* !HAVE_VERSIONSORT */
 	sort_count = scandir(dirpath, &namelist, _filter_backup_files, versionsort);
 	setlocale(LC_COLLATE, "");
 	if (sort_count < 0) {