1 files changed, 1 insertions, 1 deletions
diff --git a/src/hostname.c b/src/hostname.c
index 5aedf29e7..52c1892f4 100644
--- a/src/hostname.c
+++ b/src/hostname.c
@@ -91,7 +91,7 @@ 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);
 
 #ifdef HAVE_SETHOSTNAME
   if (argc == 2)