diff --git a/sys/cam/cam_xpt.c b/sys/cam/cam_xpt.c
index 4e2a6b461e9..eade26ce8be 100644
--- a/sys/cam/cam_xpt.c
+++ b/sys/cam/cam_xpt.c
@@ -417,6 +417,10 @@ static struct xpt_quirk_entry xpt_quirk_table[] =
 		{ T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R   CDU9*", "*" },
 		CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
 	},
+	{
+		{ T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" },
+		CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0
+	},
 	{
 		/*
 		 * The 8200 doesn't like multi-lun probing, and probably