diff --git a/qemu/tests/cdrom.py b/qemu/tests/cdrom.py
index 63039a45afcc00775c13ed4bdb413c638ff37fa3..99771782e9e6b6e807886bcaf43b79ccedc8c89c 100644
--- a/qemu/tests/cdrom.py
+++ b/qemu/tests/cdrom.py
@@ -80,7 +80,9 @@ def run(test, params, env):
             list_cdrom_cmd = "ls /dev/cdrom*"
             filter_cdrom_re = r"/dev/cdrom-\w+|/dev/cdrom\d*"
         output = session.cmd_output(list_cdrom_cmd)
-        return re.findall(filter_cdrom_re, output)
+        cdroms = re.findall(filter_cdrom_re, output)
+        cdroms.sort()
+        return cdroms
 
     def get_cdrom_mount_point(session, drive_letter, params):
         """