1 files changed, 1 insertions, 1 deletions
diff --git a/src/chroot.c b/src/chroot.c
index d808908b4..8095f2ec1 100644
--- a/src/chroot.c
+++ b/src/chroot.c
@@ -72,7 +72,7 @@ main (int argc, char **argv)
   atexit (close_stdout);
 
   parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
-		      usage, AUTHORS, NULL);
+		      usage, AUTHORS, (char const *) NULL);
   if (argc <= 1)
     {
       error (0, 0, _("too few arguments"));