--- ray/src/ot/bbox.c	1989/02/21 14:44:47	1.2
+++ ray/src/ot/bbox.c	1991/11/12 17:01:00	2.1
@@ -63,14 +63,14 @@ FVECT  bbmin, bbmax;
 		circle2bbox(CO_P1(co), co->ad, CO_R1(co), bbmin, bbmax);
 		break;
 	case OBJ_INSTANCE:
-		io = getinstance(o, GET_BOUNDS);
+		io = getinstance(o, IO_BOUNDS);
 		for (j = 0; j < 8; j++) {
 			for (i = 0; i < 3; i++) {
 				v[i] = io->obj->scube.cuorg[i];
 				if (j & 1<<i)
 					v[i] += io->obj->scube.cusize;
 			}
-			multp3(v, v, io->f.xfm);
+			multp3(v, v, io->x.f.xfm);
 			point2bbox(v, bbmin, bbmax);
 		}
 		break;