--- src/bin/ls/extern.h	2005/09/18 11:32:19	1.5
+++ src/bin/ls/extern.h	2005/09/18 18:01:49	1.6
@@ -40,11 +40,11 @@ int	 revnamecmp(const FTSENT *, const FT
 int	 statcmp(const FTSENT *, const FTSENT *);
 int	 revstatcmp(const FTSENT *, const FTSENT *);
 
-void	 printcol(DISPLAY *);
-void	 printlong(DISPLAY *);
+void	 printcol(const DISPLAY *);
+void	 printlong(const DISPLAY *);
 int	 printname(const char *);
-void	 printscol(DISPLAY *);
-void	 printstream(DISPLAY *);
+void	 printscol(const DISPLAY *);
+void	 printstream(const DISPLAY *);
 void	 usage(void);
 size_t	 len_octal(const char *, int);
 int	 prn_octal(const char *);