--- ray/src/rt/ambient.c	1989/05/30 20:06:09	1.5
+++ ray/src/rt/ambient.c	1989/09/05 09:46:17	1.7
@@ -203,7 +203,8 @@ double  s;
 		 *  Jittering final test reduces image artifacts.
 		 */
 		wt = sqrt(e1) + sqrt(e2);
-		if (wt > ambacc*(0.9 + 0.2*frandom()))
+		wt *= .9 + .2*frandom();
+		if (wt > ambacc)
 			continue;
 		if (wt <= 1e-3)
 			wt = 1e3;