--- ray/src/gen/gensurf.c	1990/12/15 15:00:52	1.12
+++ ray/src/gen/gensurf.c	1991/04/23 13:04:58	1.13
@@ -51,7 +51,7 @@ char  *argv[];
 	int  i, j, m, n;
 	char  stmp[256];
 
-	varset("PI", PI);
+	varset("PI", ':', PI);
 	funset("hermite", 5, l_hermite);
 	funset("bezier", 5, l_bezier);
 	funset("bspline", 5, l_bspline);