1 files changed, 1 insertions, 1 deletions
diff --git a/src/logname.c b/src/logname.c
index a10de9f7a..455cea63a 100644
--- a/src/logname.c
+++ b/src/logname.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);
 
   while ((c = getopt_long (argc, argv, "", long_options, NULL)) != -1)
     {