diff --git a/sys/dev/vinum/vinumvar.h b/sys/dev/vinum/vinumvar.h
index 61303915444..12986e04c43 100644
--- a/sys/dev/vinum/vinumvar.h
+++ b/sys/dev/vinum/vinumvar.h
@@ -126,6 +126,16 @@ enum constants {
 
 #define OBJTYPE(x)	((minor(x) >> VINUM_TYPE_SHIFT) & 3)
 
+    /* Create device minor numbers */
+#define VINUMDEV(o, t)		makedev (VINUM_CDEV_MAJOR, VINUMMINOR (o, t))
+
+#define VINUM_VOL(v)		makedev (VINUM_CDEV_MAJOR, \
+					 VINUMMINOR (v, VINUM_VOLUME_TYPE))
+#define VINUM_PLEX(p)		makedev (VINUM_CDEV_MAJOR, \
+					 VINUMMINOR (p, VINUM_PLEX_TYPE))
+#define VINUM_SD(s)		makedev (VINUM_CDEV_MAJOR, \
+					 VINUMMINOR (s, VINUM_SD_TYPE))
+
     /* extract device type */
 #define DEVTYPE(x) ((minor (x) >> VINUM_TYPE_SHIFT) & 3)