--- ray/src/gen/genworm.c	1990/07/20 14:36:02	1.6
+++ ray/src/gen/genworm.c	1991/04/23 13:05:03	1.7
@@ -43,7 +43,7 @@ char  *argv[];
 	FVECT  lastp, p;
 	int  i, nseg;
 
-	varset("PI", PI, NULL);
+	varset("PI", ':', PI);
 	funset("hermite", 5, l_hermite);
 	funset("bezier", 5, l_bezier);
 	funset("bspline", 5, l_bspline);