1 files changed, 1 insertions, 1 deletions
diff --git a/src/cmp.c b/src/cmp.c
index d3e1aec..979408b 100644
--- a/src/cmp.c
+++ b/src/cmp.c
@@ -251,7 +251,7 @@ main (int argc, char **argv)
 
       case 'v':
         version_etc (stdout, PROGRAM_NAME, PACKAGE_NAME, Version,
-                     AUTHORS, (char *) NULL);
+                     AUTHORS, nullptr);
         check_stdout ();
         return EXIT_SUCCESS;