1 files changed, 1 insertions, 1 deletions
diff --git a/src/echo.c b/src/echo.c
index 096876fda..74475218a 100644
--- a/src/echo.c
+++ b/src/echo.c
@@ -140,7 +140,7 @@ main (int argc, char **argv)
       if (STREQ (argv[1], "--version"))
         {
           version_etc (stdout, PROGRAM_NAME, PACKAGE_NAME, Version, AUTHORS,
-                       (char *) NULL);
+                       (char *) nullptr);
           return EXIT_SUCCESS;
         }
     }