diff --git a/piclib/built-in.scm b/piclib/built-in.scm
index 5ef1346d..83c5b716 100644
--- a/piclib/built-in.scm
+++ b/piclib/built-in.scm
@@ -723,4 +723,9 @@
   (define (cdddar p) (cddr (cdar p)))
   (define (cddddr p) (cddr (cddr p)))
 
-  (export caaar caadr cadar caddr cdaar cdadr cddar cdddr caaaar caaadr caadar caaddr cadaar cadadr caddar cadddr cdaaar cdaadr cdadar cdaddr cddaar cddadr cdddar cddddr))
+  (export caaar caadr cadar caddr
+          cdaar cdadr cddar cdddr
+          caaaar caaadr caadar caaddr
+          cadaar cadadr caddar cadddr
+          cdaaar cdaadr cdadar cdaddr
+          cddaar cddadr cdddar cddddr))