--- a/src/librt/cut.c	2009-12-07 10:27:48.322571413 -0500
+++ b/src/librt/cut.c	2009-12-07 11:13:38.465614618 -0500
@@ -64,7 +64,7 @@
 HIDDEN void		rt_ct_measure BU_ARGS((struct rt_i *rtip,
 					       union cutter *cutp, int depth));
 HIDDEN union cutter	*rt_ct_get BU_ARGS((struct rt_i *rtip));
-void		rt_plot_cut BU_ARGS((FILE *fp, struct rt_i *rtip,
+HIDDEN void		rt_plot_cut BU_ARGS((FILE *fp, struct rt_i *rtip,
 				     union cutter *cutp, int lvl));
 
 BU_EXTERN(void		rt_pr_cut_info, (const struct rt_i *rtip,