diff --git a/sys/dev/raid/vinum/vinumioctl.c b/sys/dev/raid/vinum/vinumioctl.c
--- a/sys/dev/raid/vinum/vinumioctl.c
+++ b/sys/dev/raid/vinum/vinumioctl.c
@@ -257,7 +257,7 @@
 
 	case VINUM_GETFREELIST:				    /* get a drive free list element */
 	    index = *(int *) data;			    /* get the drive index */
-	    fe = ((int *) data)[1];			    /* and the free list element */
+	    fe = ((u_int *) data)[1];			    /* and the free list element */
 	    if ((index >= (unsigned) vinum_conf.drives_allocated) /* plex doesn't exist */
 		||(DRIVE[index].state == drive_unallocated)) {
 		error = ENODEV;