--- ray/src/rt/m_brdf.c	1991/05/08 08:27:50	1.7
+++ ray/src/rt/m_brdf.c	1991/05/10 08:51:02	1.8
@@ -286,8 +286,10 @@ register RAY  *r;
 					sr.rdir[i] = r->rdir[i] -
 							.75*r->pert[i];
 				normalize(sr.rdir);
-			} else
+			} else {
+				VCOPY(sr.rdir, r->rdir);
 				transtest = 2;
+			}
 			rayvalue(&sr);
 			multcolor(sr.rcol, ctmp);
 			addcolor(r->rcol, sr.rcol);