--- ray/src/gen/genrev.c	1990/07/20 14:35:58	1.7
+++ ray/src/gen/genrev.c	1991/04/23 13:05:01	1.8
@@ -44,7 +44,7 @@ char  *argv[];
 	int  i, nseg;
 	int  orient;
 
-	varset("PI", PI);
+	varset("PI", ':', PI);
 	funset("hermite", 5, l_hermite);
 	funset("bezier", 5, l_bezier);
 	funset("bspline", 5, l_bspline);